Slitter reel press mechanism

Abstract

This utility model relates to the field of slitting machine technology, and in particular to a slitting machine winding and pressing mechanism. A movable base driven by a linear module moves the tracking roller and multiple pressure roller modules laterally as a whole, achieving automatic tracking and synchronous compensation for the increase in roll diameter during winding. Multiple pressure roller modules are independently slidably mounted on a connecting rod, allowing for lateral positioning adjustment based on the actual position of the multiple electrode sheets after slitting. This ensures that each pressure roller module precisely corresponds to and presses down on its own electrode sheet. Combined with a precisely controllable pressure regulating cylinder driving the individual action of each pressure roller, this mechanism can implement independent, stable, and flexible pressing on each electrode sheet, effectively avoiding defects such as misalignment and looseness caused by mutual interference and uneven pressure between electrode sheets during winding. Ultimately, it significantly improves the neatness, tightness, and overall quality of synchronous winding of multiple electrode sheets, reducing material waste.

Description

Technical Field

[0001] This utility model relates to the field of slitting machine technology, and in particular to a slitting machine winding and pressing mechanism. Background Technology

[0002] In the slitting and winding process of lithium-ion battery electrodes, the flatness and tightness of the winding are crucial. During high-speed winding, the electrodes are prone to lateral movement due to tension fluctuations, which can lead to uneven or loose winding, easily causing defects such as material collapse and wrinkles, seriously affecting product quality and production efficiency.

[0003] To improve winding quality, existing technologies often employ clamping mechanisms, such as using a cylinder to drive a pressure roller at the end of a swing arm, continuously pressing against the surface of the coil. This method uses radial pressure to expel air and suppress vibration. However, such single-point clamping mechanisms are difficult to dynamically adapt to changes in coil diameter, often resulting in problems such as excessive initial pressure damaging the electrode sheet and insufficient pressure in the later stages causing a decline in clamping force. Furthermore, they have limited constraints on the lateral flatness of the electrode sheet, and their effectiveness remains insufficient. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a slitting machine winding and pressing mechanism.

[0005] The present invention adopts the following technical solution: A slitting machine winding and pressing mechanism includes: A driving unit, the driving unit including a linear module and a movable base driven and connected to the linear module; The follower roller unit includes a mounting frame vertically fixed to the movable base, and a tracking roller connected to the mounting frame; and A floating clamping unit, comprising a connecting rod vertically fixed to the movable base, and at least two pressure roller modules slidably fixed to the connecting rod; The linear module is used to drive the movable base, the follower roller unit, and the floating pressing unit to move synchronously following the change in roll diameter.

[0006] Preferably, the linear module is a lead screw module.

[0007] Preferably, the tracking roller includes a mounting shaft and a roller, the roller being rotatably mounted on the outside of the mounting shaft via a bearing assembly; one end of the mounting shaft is fixedly connected to the mounting frame via a pin.

[0008] Preferably, the pressure roller module includes a cylinder seat, a rotating shaft assembly, a swing arm, an adjusting cylinder, and a pressure roller assembly; the cylinder seat has a first connecting hole and a second connecting hole, the first connecting hole being used for connecting a connecting rod; one end of the swing arm has a third connecting hole, and the rotating shaft assembly is sequentially inserted into the second connecting hole and the third connecting hole to achieve relative swinging between the cylinder seat and the swing arm; the adjusting cylinder is fixed to the upper end of the cylinder seat, and the telescopic end of the adjusting cylinder is connected to the swing arm; the pressure roller assembly is assembled at the end of the swing arm away from the cylinder seat.

[0009] Preferably, the rotating shaft assembly includes a rotating shaft, a side pressure plate, and a locking screw; the rotating shaft has an axially extending through hole; one end of the side pressure plate extends a locking pin; the locking pin is inserted into the through hole of the rotating shaft; and the locking screw is screwed onto the end of the locking pin.

[0010] Preferably, a miniature bearing is provided in the third connecting hole, the outer wall of the miniature bearing is connected to the inner wall of the third connecting hole, and the inner wall of the miniature bearing is connected to the outer wall of the rotating shaft.

[0011] Preferably, the pressure roller module further includes a first thrust bearing and a second thrust bearing, which are respectively attached to both sides of the swing arm.

[0012] Preferably, the inner wall of the first connecting hole is provided with a positioning protrusion extending axially; the outer wall of the connecting rod extends with a positioning groove extending axially; the positioning protrusion and the positioning groove are engaged.

[0013] Preferably, the top of the cylinder seat is provided with an inclined mounting plane, and the bottom of the adjusting cylinder is fixedly provided with a mounting bracket, which is fixed on the mounting plane to achieve a fixed connection between the adjusting cylinder and the cylinder seat.

[0014] Preferably, the pressure roller assembly includes a pressure roller mounting plate and a pressure roller. The pressure roller mounting plate is fixed to the end of the swing arm away from the cylinder seat. The pressure roller mounting plate is provided with a rotating shaft, and the pressure roller is sleeved on the outside of the rotating shaft.

[0015] The beneficial effects of this utility model are as follows: The slitting machine winding and pressing mechanism of this utility model achieves automatic tracking and synchronous compensation for the increase in roll diameter during winding by using a movable base driven by a linear module to move the tracking roller and multiple pressure roller modules as a whole. The multiple pressure roller modules can be independently slidably set on the connecting rod, and can be laterally positioned and adjusted according to the actual position of multiple electrode sheets after slitting, so that each pressure roller module accurately corresponds to and presses a single electrode sheet. Combined with the adjustment cylinder that can precisely control the downward pressure to drive each pressure roller to move individually, this mechanism can perform independent and stable flexible pressing on each electrode sheet, effectively avoiding defects such as misalignment and looseness caused by mutual interference and uneven pressure between electrode sheets during winding, and ultimately significantly improving the neatness, tightness and overall quality of synchronous winding of multiple electrode sheets, and reducing material waste. Attached Figure Description

[0016] Figure 1 This is a first structural schematic diagram of the slitting machine winding and pressing mechanism of this utility model; Figure 2 This is a schematic diagram of the second structure of the slitting machine winding and pressing mechanism of this utility model; Figure 3 This is a schematic diagram of the third structure of the slitting machine winding and pressing mechanism of this utility model; Figure 4 for Figure 1 A schematic diagram of the floating clamping unit in the diagram; Figure 5 for Figure 4 A schematic diagram of the pressure roller module in the middle; Figure 6 for Figure 5 Side view of the pressure roller module; Figure 7 for Figure 6 A sectional view along AA.

[0017] Numbering on the map: 10-Drive unit; 11-Linear module; 12-Modible base; 20 - Follower roller unit; 21-Mounting frame; 22-Tracking roller; 221-Mounting shaft; 222-Roller; 30 - Floating clamping unit; 40 - Connecting rod; 41 - Positioning groove; 50-Pressure roller module; 51-Cylinder seat; 511-First connecting hole; 512-Second connecting hole; 513-Positioning protrusion; 514-Mounting plane; 52-Rotating shaft; 521-Through hole; 53-Side pressure plate; 531-Locking post; 54-Locking screw; 55-Swing arm; 551-Third connecting hole; 56-Adjusting cylinder; 561-Mounting bracket; 57-Pressure roller assembly; 571-Pressure roller mounting plate; 572-Pressure roller; 60-Miniature bearing; 70 - First thrust bearing; 80 - Second thrust bearing. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1 to 7As shown, the slitting machine winding and pressing mechanism of this utility model includes a drive unit 10, a follower roller unit 20, and a floating pressing unit 30. The drive unit 10 includes a linear module 11 and a movable base 12 drivenly connected to the linear module 11; the follower roller unit 20 includes a mounting frame 21 vertically fixed to the movable base 12 and a tracking roller 22 connected to the mounting frame 21; the floating pressing unit 30 includes a connecting rod 40 vertically fixed to the movable base 12 and at least two pressure roller modules 50 slidably fixed to the connecting rod 40.

[0022] During operation, the drive unit 10 drives the entire mechanism to move synchronously along the axial direction of the roll, automatically compensating for changes in the winding position caused by the increase in roll diameter. The tracking roller 22 in the follower roller unit 20 not only provides stable tension and guidance for the electrode sheets, but also tracks the position of the roll end face in real time; the floating pressing unit 30, through multiple independently sliding pressure roller modules 50, enables each pressure roller 572 to accurately correspond to a single cut electrode sheet and apply uniform and controllable radial pressure. This collaborative working mechanism effectively solves the defects of electrode sheet misalignment, loose winding, and edge collapse caused by uneven pressure and untimely tracking in traditional winding, significantly improving the neatness, tightness, and overall production efficiency of synchronous winding of multiple electrode sheets.

[0023] Specifically, in this embodiment, the linear module 11 is a lead screw module. The lead screw module offers advantages such as high transmission accuracy, precise positioning, and good rigidity, ensuring that the movable base 12 drives the clamping mechanism to move smoothly and accurately, achieving precise tracking and compensation for changes in roll diameter. Furthermore, the linear module 11 can also be a synchronous belt module or a linear motor module, allowing for flexible selection of the drive scheme based on different accuracy, speed, and cost requirements.

[0024] Specifically, the tracking roller 22 includes a mounting shaft 221 and a roller 222. The roller 222 is rotatably mounted on the outside of the mounting shaft 221 via a bearing assembly. One end of the mounting shaft 221 is fixedly connected to the mounting frame 21 via a pin. The roller 222 can rotate flexibly as the electrode is conveyed, greatly reducing frictional resistance and material surface wear. At the same time, the pin connection provides stable and reliable fixed support, facilitating installation and maintenance.

[0025] Specifically, the pressure roller module 50 includes a cylinder seat 51, a rotating shaft assembly, a swing arm 55, an adjusting cylinder 56, and a pressure roller assembly 57. The cylinder seat 51 is provided with a first connecting hole 511 and a second connecting hole 512. The first connecting hole 511 is used for connecting the connecting rod 40. One end of the swing arm 55 is provided with a third connecting hole 551. The rotating shaft assembly is sequentially inserted into the second connecting hole 512 and the third connecting hole 551 to realize the relative swinging of the cylinder seat 51 and the swing arm 55. The adjusting cylinder 56 is fixed to the upper end of the cylinder seat 51, and the extension end of the adjusting cylinder 56 is connected to the swing arm 55. The pressure roller assembly 57 is assembled at the end of the swing arm 55 away from the cylinder seat 51.

[0026] The adjusting cylinder 56 drives the swing arm 55 to rotate around the rotating shaft assembly through its telescopic movement, thereby causing the pressure roller assembly 57 to press against or move away from the winding surface. When the adjusting cylinder 56 extends, the swing arm 55 drives the pressure roller 572 to press down and contact the material roll, providing a controllable clamping force. When the adjusting cylinder 56 retracts, the pressure roller 572 is lifted up with the swing arm 55 and disengages from the material roll, facilitating unloading or threading.

[0027] Furthermore, the rotating shaft assembly includes a rotating shaft 52, a side pressure plate 53, and a locking screw 54. The rotating shaft 52 has an axially extending through hole 521. One end of the side pressure plate 53 extends a locking pin 531. The locking pin 531 is inserted into the through hole 521 of the rotating shaft 52. The locking screw 54 is screwed onto the end of the locking pin 531. Quick alignment and installation are achieved through the insertion and engagement of the locking pin 531 and the through hole 521. The locking screw 54 then tightly fixes the side pressure plate 53 to the end of the rotating shaft 52, forming a stable axial lock. The separate locking structure of the rotating shaft 52, side pressure plate 53, and locking screw 54 avoids machining threads on the rotating shaft 52, reducing machining difficulty and manufacturing costs. During disassembly and maintenance, only the locking screw 54 needs to be loosened to separate the components, eliminating the need for complete replacement and significantly improving maintenance efficiency.

[0028] Specifically, a miniature bearing 60 is provided inside the third connecting hole 551. The outer wall of the miniature bearing 60 is connected to the inner wall of the third connecting hole 551, and the inner wall of the miniature bearing 60 is connected to the outer wall of the rotating shaft 52. The pressure roller module 50 also includes a first thrust bearing 70 and a second thrust bearing 80, which are respectively attached to both sides of the swing arm 55. By having the miniature bearing 60 bear the radial load and the two thrust bearings on both sides jointly bear the axial load, a high degree of integration of radial and axial support is achieved during the swing of the swing arm 55. This greatly reduces the radial dimension at the connection of the swing arm 55, significantly reducing the overall width of a single pressure roller module 50, perfectly adapting to the slitting and winding requirements of ultra-narrow pole sheets below 5mm. At the same time, the triple bearings work together to ensure that the swing arm 55 can maintain smooth rotational accuracy when subjected to off-center loads, avoiding jamming. The compact design significantly improves the arrangement density along the connecting rod 40 while ensuring load-bearing capacity, so that multiple modules do not interfere when closely arranged.

[0029] Specifically, the inner wall of the first connecting hole 511 is provided with a positioning protrusion 513 extending axially; the outer wall of the connecting rod 40 extends a positioning groove 41 extending axially. The positioning protrusion 513 and the positioning groove 41 engage with each other to effectively position the pressure roller module 50, specifically to ensure the pitch angle of the pressure roller module 50 and effectively meet the pressing requirements.

[0030] Specifically, the top of the cylinder base 51 is provided with an inclined mounting plane 514, and the bottom of the adjusting cylinder 56 is fixedly provided with a mounting bracket 561. The mounting bracket 561 is fixed on the mounting plane 514 to achieve a fixed connection between the adjusting cylinder 56 and the cylinder base 51. The inclined mounting plane 514 allows the adjusting cylinder 56 to be installed at a specific angle to optimize the force application angle of the adjusting cylinder 56; at the same time, it effectively avoids interference with the space of the equipment above and improves the overall layout compactness.

[0031] Specifically, the pressure roller assembly 57 includes a pressure roller mounting plate 571 and a pressure roller 572. The pressure roller mounting plate 571 is fixed to the end of the swing arm 55 away from the cylinder seat 51. The pressure roller mounting plate 571 is provided with a rotating shaft (not shown in the figure). The pressure roller 572 is sleeved on the outside of the rotating shaft and is fixed by an end cap.

[0032] Compared to existing technologies, the slitting machine winding and pressing mechanism of this utility model achieves automatic tracking and synchronous compensation for the increase in roll diameter during winding by using a movable base 12 driven by a linear module 11 to move the tracking roller 22 and multiple pressure roller modules 50 laterally. The multiple pressure roller modules 50 can be independently slidably mounted on the connecting rod 40, and can be laterally positioned and adjusted according to the actual position of multiple electrode sheets after slitting, so that each pressure roller module 50 accurately corresponds to and presses a single electrode sheet. Combined with the adjustment cylinder 56 that can precisely control the downward pressure to drive each pressure roller 572 to move individually, this mechanism can perform independent and stable flexible pressing on each electrode sheet, effectively avoiding defects such as misalignment and looseness caused by mutual interference and uneven pressure between electrode sheets during winding, and ultimately significantly improving the neatness, tightness and overall quality of synchronous winding of multiple electrode sheets, and reducing material waste.

[0033] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A slitting machine winding and pressing mechanism, characterized in that, include: A driving unit, the driving unit including a linear module and a movable base driven and connected to the linear module; The follower roller unit includes a mounting frame vertically fixed on the movable base and a tracking roller connected to the mounting frame; and A floating clamping unit, comprising a connecting rod vertically fixed to the movable base, and at least two pressure roller modules slidably fixed to the connecting rod; The linear module is used to drive the movable base, the follower roller unit, and the floating pressing unit to move synchronously following the change in roll diameter.

2. The slitting machine winding and pressing mechanism according to claim 1, characterized in that, The linear module is a lead screw module.

3. The slitting machine winding and pressing mechanism according to claim 1, characterized in that, The tracking roller includes a mounting shaft and a roller. The roller is rotatably mounted on the outside of the mounting shaft via a bearing assembly. One end of the mounting shaft is fixedly connected to the mounting frame via a pin.

4. The slitting machine winding and pressing mechanism according to claim 1, characterized in that, The pressure roller module includes a cylinder seat, a rotating shaft assembly, a swing arm, an adjusting cylinder, and a pressure roller assembly. The cylinder seat has a first connecting hole and a second connecting hole, the first connecting hole being used for connecting a connecting rod. One end of the swing arm has a third connecting hole, and the rotating shaft assembly is sequentially inserted into the second connecting hole and the third connecting hole to achieve relative swinging between the cylinder seat and the swing arm. The adjusting cylinder is fixed to the upper end of the cylinder seat, and the telescopic end of the adjusting cylinder is connected to the swing arm. The pressure roller assembly is assembled at the end of the swing arm away from the cylinder seat.

5. The slitting machine winding and pressing mechanism according to claim 4, characterized in that, The rotating shaft assembly includes a rotating shaft, a side pressure plate, and a locking screw; the rotating shaft has an axially extending through hole; one end of the side pressure plate extends a locking pin; the locking pin is inserted into the through hole of the rotating shaft; and the locking screw is screwed onto the end of the locking pin.

6. The slitting machine winding and pressing mechanism according to claim 5, characterized in that, A miniature bearing is provided in the third connecting hole. The outer wall of the miniature bearing is connected to the inner wall of the third connecting hole, and the inner wall of the miniature bearing is connected to the outer wall of the rotating shaft.

7. The slitting machine winding and pressing mechanism according to claim 6, characterized in that, The pressure roller module also includes a first thrust bearing and a second thrust bearing, which are respectively attached to both sides of the swing arm.

8. The slitting machine winding and pressing mechanism according to claim 4, characterized in that, The inner wall of the first connecting hole is provided with a positioning protrusion extending axially; the outer wall of the connecting rod extends with a positioning groove extending axially; the positioning protrusion and the positioning groove are engaged.

9. The slitting machine winding and pressing mechanism according to claim 4, characterized in that, The top of the cylinder seat is provided with an inclined mounting plane, and the bottom of the adjusting cylinder is fixedly provided with a mounting bracket. The mounting bracket is fixed on the mounting plane to achieve a fixed connection between the adjusting cylinder and the cylinder seat.

10. The slitting machine winding and pressing mechanism according to claim 4, characterized in that, The pressure roller assembly includes a pressure roller mounting plate and a pressure roller. The pressure roller mounting plate is fixed to the end of the swing arm away from the cylinder seat. The pressure roller mounting plate is provided with a rotating shaft, and the pressure roller is sleeved on the outside of the rotating shaft.

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