A fixing structure of a lithium battery production tablet machine

Abstract

The utility model relates to lithium battery production technical field, concretely is a kind of fixing structure of lithium battery production tablet machine, including the rotating shaft that passes through mounting plate and is connected with mounting plate rotation, and the outer wall of rotating shaft is close to the coaxial key connection of front end and is connected with connecting disc, and the front end of connecting disc is fixed with two symmetrical positioning plate, and the front end of positioning plate is equipped with limit hole, limit rod is inserted into slot and is inserted with limit hole and is matched, and the automatic locking of limit rod is realized by the insertion cooperation of positioning plate and positioning slot, limit rod and limit hole, and spring push slider, this fixing mode replaces conventional nut fastening mode, and the disassembly of unwinding wheel can be completed without the aid of wrench and other tools.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, specifically to a fixed structure for a lithium battery production sheet-making machine. Background Technology

[0002] Lithium-ion battery production encompasses multiple stages, including positive and negative electrode preparation, cell assembly, electrolyte injection, packaging, and testing. The electrode fabrication machine is primarily responsible for electrode production, processing rolled electrode materials according to set dimensions and specifications through cutting, coating, and rolling to create compliant positive and negative electrode sheets. In the unwinding assembly of the electrode fabrication machine, the unwinding rollers support the rolled electrode materials and, through cooperation with components such as the rotating shaft and connecting discs, ensure smooth and uniform unwinding of the electrode sheets.

[0003] Utility model patent application number CN201711187662.4 discloses a lithium battery sheet manufacturing equipment. This equipment includes an electrode unwinding mechanism, an electrode tab feeding mechanism, an electrode tab welding mechanism, and an electrode tab adhesive application mechanism. The electrode unwinding mechanism includes a support, a first unwinding wheel, and a base. The first unwinding wheel is mounted on the support, and the support is slidably mounted on the base. The base has two slide rails, and the support has two sliding grooves that cooperate with the slide rails. A lead screw is provided between the two slide rails to drive the support to move, and a motor is provided on the base to drive the lead screw to rotate. In this lithium battery sheet manufacturing equipment, the rod and motor can drive the first unwinding wheel to align according to the detected electrode position, achieving automatic correction and ensuring the consistency of the electrode tab welding position. Because the correction is performed at the source, the stress on the electrode is reduced, effectively preventing the electrode from being torn.

[0004] Although the lithium battery sheet-making equipment achieves automatic deviation correction, it still has the following shortcomings in actual use: The first unwinding roller is mounted on a support; during actual use, once all the electrode sheets wound on it have been unwound, the operator must replace the unwinding roller. Currently, nut tightening is a common method for fixing the unwinding roller. However, this design has significant drawbacks. When disassembling and assembling the unwinding roller, operators must use tools such as wrenches. The use of additional tools makes the operation process cumbersome, increasing the number of steps and placing certain demands on the operator's skill level and tool availability. This undoubtedly reduces the convenience of unwinding and assembling the unwinding roller and also leads to a decrease in the efficiency of the entire replacement process. Therefore, we propose a fixing structure for a lithium battery sheet-making machine. Utility Model Content

[0005] To solve the above problems, this utility model provides a fixing structure for a lithium battery production sheet-making machine.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A fixed structure for a lithium battery manufacturing wafer-making machine includes:

[0008] Mounting plate;

[0009] An unwinding assembly for unwinding electrode sheets and mounted on the front side of a mounting plate; including a rotating shaft that passes through the mounting plate and is rotatably connected to the mounting plate; a connecting disc is coaxially keyed to the outer wall of the rotating shaft near the front end; two symmetrical positioning plates are fixed to the front end face of the connecting disc; and limit holes are provided at the front end of the positioning plates.

[0010] The front side of the connecting plate is provided with a unwinding wheel, and the connecting plate abuts against the rear end face of the unwinding wheel. A shaft hole is opened at the center of the unwinding wheel, and the rotating shaft passes through the shaft hole. Positioning grooves are opened on both the upper and lower sides of the shaft hole, and positioning plates pass through the positioning grooves.

[0011] The front end of the unwinding reel is provided with a fixed seat, which abuts against the front end face of the unwinding reel. The front end face of the fixed seat has two sliding grooves, and one side of each sliding groove has a slot for the positioning plate to be inserted. Two guide rods are fixed in the sliding grooves, and springs are sleeved on the outside of each guide rod. A slider is slidably installed in each sliding groove, and the slider has a sliding hole that is slidably connected to the guide rod. Limit rods are fixed at the two opposite ends of the two sliders, and the limit rods pass through the slots and are inserted into the limit holes.

[0012] Furthermore, a motor is mounted on the rear side of the mounting plate, and a transmission assembly is mounted on the rear side of the mounting plate. The transmission assembly includes two sprockets, and a chain meshes between the two sprockets. The output shaft of the motor is coaxially keyed to one sprocket, and the rear end of the shaft is coaxially keyed to the other sprocket.

[0013] Furthermore, a U-shaped mounting bracket is fixedly connected to one side of the rear end face of the mounting plate by bolts, and the motor is fixedly connected to the mounting bracket by bolts.

[0014] In both of these settings, the transmission components enable the motor-driven shaft to rotate stably and smoothly. This transmission method has a precise transmission ratio and high transmission efficiency.

[0015] Furthermore, two positioning rods are fixed on the front end face of the connecting plate, and positioning holes are provided on both sides of the shaft hole, with the positioning rods being inserted into the corresponding positioning holes.

[0016] In this setup, the positioning rod is inserted into the positioning hole, and the positioning plate is inserted into the positioning groove, forming a dual positioning system that ensures the installation stability of the unwinding wheel.

[0017] Furthermore, the two ends of the spring are respectively connected to the inner wall of the groove and the slider, and the spring is in a pre-compressed state;

[0018] In this setting, the spring force can be used to reset the slider and limit rod, thereby automatically completing the locking.

[0019] Furthermore, the connecting disc and the positioning plate are integrally formed, and the cross-sectional shape of the connecting disc is annular;

[0020] In this design, the one-piece molding reduces gaps between parts, enhances structural strength and integrity, and improves component durability.

[0021] Furthermore, the slider is tightly welded to the limiting rod, and the size of the slider is adapted to the size of the groove;

[0022] This setting ensures the reliability and stability between the slider and the limit rod.

[0023] Furthermore, a lever is fixed to the front end face of the slider, and the lever is fixedly connected to the slider by bolts;

[0024] In this setup, the lever fixed to the front end of the slider provides the operator with a convenient point for applying force.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1. The unwinding reel is automatically locked by the insertion and engagement of the positioning plate and positioning groove, the limit rod and the limit hole, and the spring-driven slider. This fixing method replaces the traditional nut tightening method, allowing for the assembly and disassembly of the unwinding reel without the need for tools such as wrenches. Operators only need to move the lever to overcome the spring force to easily disassemble the unwinding reel. During installation, the spring automatically resets and locks the reel. This design simplifies the operation process of fixing and disassembling the unwinding reel, improving the convenience and efficiency of unwinding reel replacement.

[0027] 2. The connecting plate and the unwinding wheel are positioned by a double positioning structure of positioning plate and positioning groove, positioning rod and positioning hole. At the same time, the fixed seat is pressed against the front and rear end faces of the unwinding wheel. With the precise insertion of the limiting rod and the limiting hole, the unwinding wheel is stably constrained from the axial and circumferential directions, which effectively prevents the unwinding wheel from loosening or shifting during use and ensures that the electrode unwinding process is stable and reliable. Attached Figure Description

[0028] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0029] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0030] Figure 3 This is an exploded view of the unwinding assembly in this utility model;

[0031] Figure 4This is a schematic diagram of the connecting disc in this utility model;

[0032] Figure 5 This is a cross-sectional view of the structure of the fixing base in this utility model;

[0033] In the picture:

[0034] 1. Mounting plate; 10. Mounting bracket; 11. Motor;

[0035] 2. Transmission components;

[0036] 3. Unwinding assembly; 30. Rotary shaft; 31. Connecting disc; 310. Positioning rod; 32. Positioning plate; 320. Limiting hole; 33. Unwinding wheel; 330. Shaft hole; 331. Positioning groove; 332. Positioning hole; 34. Fixing base; 340. Slide groove; 341. Slot; 35. Guide rod; 36. Spring; 37. Slider; 370. Slide hole; 38. Limiting rod. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0038] This embodiment provides a technical solution:

[0039] Please see Figures 1-5 As shown, a fixing structure for a lithium battery production sheet-making machine includes a mounting plate 1;

[0040] With the above configuration, the mounting plate 1 serves as a basic load-bearing component, providing a stable mounting platform for the unwinding assembly 3 and ensuring its operational stability.

[0041] In this embodiment, a motor 11 is mounted on the rear side of the mounting plate 1, and a transmission assembly 2 is also mounted on the rear side of the mounting plate 1. The transmission assembly 2 includes two sprockets with a chain meshing between them. The output shaft of the motor 11 is coaxially keyed to one sprocket, and the rear end of the rotating shaft 30 is coaxially keyed to the other sprocket. This transmission method has a precise transmission ratio and high transmission efficiency, and can stably transmit power to the rotating shaft 30, ensuring that the unwinding wheel 33 rotates at a uniform speed, thus meeting the requirements of stability and precision for electrode unwinding in the lithium battery manufacturing process.

[0042] In this embodiment, a U-shaped mounting bracket 10 is fixedly connected to one side of the rear end face of the mounting plate 1 by bolts, and the motor 11 is fixedly connected to the mounting bracket 10 by bolts. This structure is easy to install and disassemble, can stably support the motor 11, effectively reduce the vibration transmission during the operation of the motor 11, and improve the overall operational stability of the equipment.

[0043] Please see Figures 1-5 As shown, the unwinding assembly 3 is used for unwinding the electrode sheet and is installed on the front side of the mounting plate 1. It includes a rotating shaft 30 that passes through the mounting plate 1 and is rotatably connected to it. A connecting plate 31 is coaxially keyed to the outer wall of the rotating shaft 30 near its front end. Two symmetrical positioning plates 32 are fixed to the front end face of the connecting plate 31. Limiting holes 320 are formed at the front end of the positioning plates 32. An unwinding wheel 33 is provided on the front side of the connecting plate 31, and the connecting plate 31 abuts against the rear end face of the unwinding wheel 33. A shaft hole 330 is formed at the center of the unwinding wheel 33, through which the rotating shaft 30 passes. Positioning grooves 331 are formed on both the upper and lower sides of the shaft hole 330, through which the positioning plates 32 pass. Positioning groove 331; the front end of the unwinding roller 33 is provided with a fixed seat 34, and the fixed seat 34 abuts against the front end face of the unwinding roller 33. The front end face of the fixed seat 34 is provided with two sliding grooves 340. One side of each sliding groove 340 is provided with a slot 341 for the positioning plate 32 to be inserted; two guide rods 35 are fixed in the sliding groove 340, and springs 36 are sleeved on the outside of each guide rod 35; sliders 37 are slidably installed in each sliding groove 340, and sliders 37 are provided with sliding holes 370 that are slidably connected with the guide rods 35; two opposite ends of the two sliders 37 are fixed with limit rods 38, and the limit rods 38 pass through the slots 341 and are inserted into the limit holes 320.

[0044] With the above settings, the rotating shaft 30 is rotatably connected to the mounting plate 1, allowing the unwinding wheel 33 to rotate smoothly for unwinding. The connecting plate 31 is connected to the rotating shaft 30 by a key, which can stably transmit torque. The positioning plate 32, together with the positioning groove 331, the limiting hole 320 and the limiting rod 38, enables the unwinding wheel 33 to be quickly and accurately positioned and locked. It can be disassembled and assembled without tools, greatly improving the convenience and efficiency of operation.

[0045] In this embodiment, two positioning rods 310 are fixed to the front end face of the connecting disc 31, and positioning holes 332 are provided on both sides of the shaft hole 330. The positioning rods 310 are inserted into the corresponding positioning holes 332. This design provides a stable constraint on the unwinding wheel 33 in the axial and circumferential directions, enhances the installation stability of the unwinding wheel 33, prevents it from loosening or shifting during the unwinding process, and ensures that the electrode sheet is unwound smoothly and reliably.

[0046] In this embodiment, the two ends of the spring 36 are respectively connected to the inner wall of the groove 340 and the slider 37, and the spring 36 is in a pre-compressed state. The spring 36 can continuously provide a stable thrust to the slider 37, so that the limiting rod 38 is tightly inserted into the limiting hole 320, ensuring that the unwinding wheel 33 is firmly locked; at the same time, during disassembly, it is only necessary to overcome the elastic force of the spring 36 to move the lever, which can easily separate the parts, making the operation simple and efficient.

[0047] In this embodiment, the connecting plate 31 and the positioning plate 32 are integrally formed, and the cross-sectional shape of the connecting plate 31 is annular. The integrally formed connecting plate 31 and the positioning plate 32 have better connection strength, ensuring the reliable connection between the connecting plate 31 and the positioning plate 32, while the annular design facilitates fixing with the rotating shaft 30.

[0048] In this embodiment, the slider 37 and the limiting rod 38 are tightly welded together, and the size of the slider 37 is adapted to the size of the groove 340. The tight welding method ensures the connection strength between the two and prevents them from falling off during use; the adapted size allows the slider 37 to slide smoothly in the groove 340, ensuring that the limiting rod 38 can be accurately and quickly inserted into or pulled out of the limiting hole 320, thus improving the reliability of the unwinding wheel 33 in disassembly and assembly.

[0049] In this embodiment, a lever is fixed to the front end face of the slider 37, and the lever is fixedly connected to the slider 37 by bolts. By moving the lever, the spring force of the spring 36 can be overcome to move the slider 37, thereby unlocking the unwinding wheel 33. Compared with the traditional complicated operation method, this significantly reduces the operation difficulty and improves the replacement efficiency of the unwinding wheel 33.

[0050] It should be added that a double-row angular contact ball bearing is used between the rotating shaft 30 and the mounting plate 1. This bearing can withstand radial and axial loads at the same time and has high rotational accuracy and rigidity. During installation, an interference fit H7 / k6 is used, and high-temperature lithium-based grease is applied to the bearing housing. Lubrication is replenished regularly through the oil cup to reduce bearing friction and wear, extend bearing service life, and ensure smooth rotation of the rotating shaft 30.

[0051] It is worth noting that the motor 11 involved in this embodiment is a conventional technology and will not be described in detail here.

[0052] When it is necessary to replace the unwinding wheel 33, the operator first moves the lever connected to the slider 37 by bolts. The lever pushes the slider 37 to move and overcomes the elastic force of the spring 36 to make the slider 37 slide. The slider 37 drives the limit rod 38 to disengage from the limit hole 320, and the restriction of the fixed seat 34 is released. At this time, the fixed seat 34 can be removed and the unwinding wheel 33 can be easily disassembled.

[0053] When installing the new unwinding roller 33, simply align the shaft hole 330 of the unwinding roller 33 with the front end of the rotating shaft 30 and insert it. Then, a person moves the lever connected to the slider 37 by bolts. The lever pushes the slider 37 to move and overcomes the elastic force of the spring 36 to make the slider 37 slide. The slider 37 drives the limiting rod 38 to retract into the slide groove 340 and disengage from the slot 341. When the positioning plate 32 is inserted into the slot 341, the person releases the lever. The spring 36 pushes the limiting rod 38 into the limiting hole 320 and automatically locks it in place. The fixing seat 34 is then fixed, and the unwinding roller 33 is also fixed.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a lithium battery production sheet-making machine, characterized in that, include: Mounting plate (1); An unwinding assembly (3) is used for unwinding the electrode sheet and is installed on the front side of the mounting plate (1); it includes a rotating shaft (30) that passes through the mounting plate (1) and is rotatably connected to the mounting plate (1). A connecting disc (31) is coaxially keyed to the outer wall of the rotating shaft (30) near the front end. Two symmetrical positioning plates (32) are fixed to the front end face of the connecting disc (31). Limiting holes (320) are opened at the front end of the positioning plates (32). The front side of the connecting plate (31) is provided with a unwinding wheel (33), and the connecting plate (31) abuts against the rear end face of the unwinding wheel (33). A shaft hole (330) is provided at the center of the unwinding wheel (33), and the rotating shaft (30) passes through the shaft hole (330). Positioning grooves (331) are provided on both the upper and lower sides of the shaft hole (330), and the positioning plate (32) passes through the positioning grooves (331). The front end of the unwinding wheel (33) is provided with a fixed seat (34), and the fixed seat (34) abuts against the front end face of the unwinding wheel (33). The front end face of the fixed seat (34) is provided with two sliding grooves (340). One side of each sliding groove (340) is provided with a slot (341) for the positioning plate (32) to be inserted. Two guide rods (35) are fixed in the sliding groove (340), and springs (36) are sleeved on the outside of each guide rod (35). A slider (37) is slidably installed in each sliding groove (340). The slider (37) is provided with a sliding hole (370) that is slidably connected to the guide rod (35). The two opposite ends of the two sliders (37) are fixed with limit rods (38). The limit rods (38) are inserted into the slots (341) and are engaged with the limit holes (320).

2. The fixing structure of the lithium battery production sheet-making machine according to claim 1, characterized in that: A motor (11) is mounted on the rear side of the mounting plate (1), and a transmission assembly (2) is mounted on the rear side of the mounting plate (1). The transmission assembly (2) includes two sprockets, and a chain meshes between the two sprockets. The output shaft of the motor (11) is coaxially keyed to one side of the sprocket, and the rear end of the rotating shaft (30) is coaxially keyed to the other side of the sprocket.

3. The fixing structure of the lithium battery production sheet-making machine according to claim 2, characterized in that: The rear end face of the mounting plate (1) is fixedly connected to a U-shaped mounting bracket (10) by bolts, and the motor (11) is fixedly connected to the mounting bracket (10) by bolts.

4. The fixing structure of the lithium battery production sheet-making machine according to claim 1, characterized in that: The front end face of the connecting plate (31) is fixed with two positioning rods (310), and positioning holes (332) are provided on both sides of the shaft hole (330). The positioning rods (310) are inserted into the corresponding positioning holes (332).

5. The fixing structure of the lithium battery production sheet-making machine according to claim 1, characterized in that: The two ends of the spring (36) are respectively connected to the inner wall of the groove (340) and the slider (37), and the spring (36) is in a pre-compressed state.

6. The fixing structure of the lithium battery production sheet-making machine according to claim 1, characterized in that: The connecting plate (31) and the positioning plate (32) are integrally formed structures, and the cross-sectional shape of the connecting plate (31) is annular.

7. The fixing structure of the lithium battery production sheet-making machine according to claim 1, characterized in that: The slider (37) is tightly welded to the limiting rod (38), and the size of the slider (37) is adapted to the size of the groove (340).

8. The fixing structure of the lithium battery production sheet-making machine according to claim 1, characterized in that: A lever is fixed to the front end face of the slider (37), and the lever is fixedly connected to the slider (37) by bolts.

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