Lithium battery diaphragm slitting device

Abstract

The utility model discloses a lithium battery diaphragm slitting device which comprises a machine frame, an unwinding roller and a winding roller are arranged at the two ends of the machine frame respectively, side plates are symmetrically installed at the end, close to the winding roller, of the machine frame, movable grooves are formed in the side plates, and guide rollers are arranged in the movable grooves in a sliding mode. Through the lifting function of the guide roller, adjustment can be conducted according to diaphragm materials of different thicknesses, it is ensured that the diaphragm can accurately enter the cutting range of the cutter, the cutter does not need to be frequently replaced or the overall structure of the device does not need to be adjusted, and efficiency is improved. The lifting function of the guide roller and the moving function of the cutter in the length direction are combined, and accurate positioning and cutting of the diaphragm can be achieved. By accurately controlling the height of the guide roller and the position of the cutter, it can be guaranteed that the diaphragm is always in the optimal state in the cutting process, and the slitting precision and the cutting quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and specifically relates to a lithium battery separator slitting device. Background Art

[0002] The lithium battery separator is an important component in lithium-ion batteries, mainly used for isolating between the positive and negative electrodes, preventing short circuits while allowing ions to pass through. To meet the requirements of different types and specifications of lithium batteries, the separator material usually needs to be slit according to specific dimensions. In the production process of lithium battery separators, the accuracy and efficiency of the slitting process directly affect the performance and production cost of the separators.

[0003] In the prior art, the slitting of lithium battery separators is usually carried out by setting a cutter between the guiding roller and the unwinding roller. Specifically, the separator material is unwound from the unwinding roller, guided by the guiding roller, and then slit by a cutter at a fixed position between the two. The cutter is controlled by a driving device, and its moving direction and speed are precisely set to ensure the stability and accuracy of the slitting process.

[0004] However, due to the fixed installation positions of the guiding roller and the unwinding roller, when replacing separator materials with different thicknesses, it is necessary to adjust the winding trajectory of the separator between the guiding roller and the unwinding roller to ensure that the separator can accurately enter the cutting range of the cutter. This not only increases the complexity and time cost of debugging, but also may lead to a decrease in slitting accuracy due to improper adjustment, thus affecting the quality of the separator. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a lithium battery separator slitting device that can adapt to the slitting of separators with different thicknesses.

[0006] A lithium battery separator slitting device according to an embodiment of the first aspect of the utility model includes a frame. A unwinding roller and a winding roller are respectively arranged at two ends of the frame. A slitting component is further installed at one end of the frame close to the winding roller. The slitting component at least includes a liftable guiding roller and a cutter that can move along the length direction of the guiding roller. The separator wound around the guiding roller and the winding roller is pressed into the cutting range of the cutter by the lifting of the guiding roller.

[0007] The slitting component further includes two side plates symmetrically arranged on the frame. An activity groove is formed on the side plates, and the guiding roller slides in the activity groove.

[0008] A lithium battery separator slitting device according to an embodiment of the utility model has at least the following beneficial effects:

[0009] Through the lifting function of the guiding roller, it can be adjusted according to diaphragm materials of different thicknesses, ensuring that the diaphragm can accurately enter the cutting range of the cutting tool. There is no need to frequently replace the cutting tool or adjust the overall structure of the device, improving the efficiency. The combination of the lifting of the guiding roller and the moving function of the cutting tool along the length direction enables precise positioning and cutting of the diaphragm. By precisely controlling the height of the guiding roller and the position of the cutting tool, it can ensure that the diaphragm is always in the best state during the cutting process, improving the slitting accuracy and cutting quality.

[0010] According to some embodiments of the present invention, a guide rail is installed on the side plate, and the movable end of the guide rail is connected to the end of the guiding roller through a parallel plate. The combination of the guide rail and the parallel plate enables the guiding roller to perform precise parallel movement along the guide rail. By sliding the guiding roller on the guide rail and fixing it at the required position, the operator can quickly and conveniently complete the adjustment, reducing the commissioning time and labor intensity, and improving the work efficiency.

[0011] According to some embodiments of the present invention, a guide shaft is further installed on the parallel plate, and the guide shaft slides synchronously with the guiding roller. The synchronous sliding design of the guide shaft and the guiding roller can ensure the synchronism of the guiding roller during the movement, avoiding the imbalance or inclination problems caused solely by the guide rail. The presence of the guide shaft can provide additional support and guiding functions, ensuring the stable sliding of the guiding roller and enhancing the operating stability of the overall device.

[0012] According to some embodiments of the present invention, the cutting tool is arranged below the guiding roller, and a synchronous belt driven by a motor is further arranged below the guiding roller. The cutting tool is arranged below the guiding roller and driven by the synchronous belt, ensuring that the cutting tool can move stably and precisely along a predetermined path. The transmission system of the synchronous belt provides smooth power output, making the cutting process of the cutting tool smoother, and greatly improving the cutting accuracy and consistency.

[0013] According to some embodiments of the present invention, the cutting tool is arranged on the synchronous belt. The motor-driven synchronous belt system can realize the automatic movement of the cutting tool, reducing the need for manual intervention and adjustment. By presetting the operating parameters of the motor and the synchronous belt, the cutting operation of diaphragms of different specifications can be quickly completed, significantly improving the work efficiency.

[0014] According to some embodiments of the present invention, the bottom of the side plate is fixedly connected with a bottom plate, and the bottom plate is installed on the frame through an adjustable support member. The adjustable support member enables the height and angle of the bottom plate and the side plate to be adjusted according to actual needs, can adapt to different working environments and the slitting requirements of diaphragms of different thicknesses, provides a flexible adjustment method, and ensures the slitting accuracy.

[0015] According to some embodiments of the present utility model, the support member includes a support rod installed on the frame, and two nuts are threadedly connected to the support rod.

[0016] According to some embodiments of the present utility model, the support rod penetrates through the bottom plate, and the bottom plate is fixed on the support rod by the two nuts. By threadedly connecting two nuts to the support rod, precise adjustment of the height and position of the bottom plate can be achieved. The two nuts are respectively located on the upper and lower sides of the support member, and by rotating the nuts, the height and horizontal position of the bottom plate can be finely adjusted.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic diagram of the overall structure of a lithium battery separator slitting device;

[0020] Figure 2 is a schematic diagram of the slitting component;

[0021] Figure 3 is Figure 2 a method diagram of area A in

[0022] Reference numerals: 1, frame; 2, unwind roller; 3, slitting component; 31, side plate; 32, winding roller; 33, support member; 34, guiding roller; 35, guide rod; 36, synchronous belt; 37, cutter; 38, guide rail; 39, parallel plate; 331, support rod; 332, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship referred to, such as up, down, front, back, left, right, etc., is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0025] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0026] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0027] Referring to Figure 1-2 , a lithium battery separator slitting device, includes a frame 1. A unwind roller 2 and a winding roller 32 are respectively provided at both ends of the frame 1. At one end of the frame 1 close to the winding roller 32, side plates 31 are symmetrically installed. An activity slot is provided on the side plate 31, and a guiding roller 34 slides in the activity slot. Through the lifting function of the guiding roller 34, it can be adjusted according to separator materials of different thicknesses to ensure that the separator can accurately enter the cutting range of the cutter 37, without the need to frequently replace the cutter 37 or adjust the overall structure of the device, improving the efficiency. The combination of the lifting of the guiding roller 34 and the moving function of the cutter 37 along the length direction can realize the precise positioning and cutting of the separator. By precisely controlling the height of the guiding roller 34 and the position of the cutter 37, it can be ensured that the separator is always in the best state during the cutting process, improving the slitting accuracy and cutting quality.

[0028] In order to further improve the working efficiency, in this embodiment, a guide rail 38 is installed on the side plate 31. The movable end of the guide rail 38 is connected to the end of the guiding roller 34 through a parallel connection plate 39. The combination of the guide rail 38 and the parallel connection plate 39 enables the guiding roller 34 to perform precise parallel movement along the guide rail 38.

[0029] Furthermore, a guiding shaft is also installed on the parallel connection plate 39, and the guiding shaft slides synchronously with the guiding roller 34. The synchronous sliding design of the guiding shaft and the guiding roller 34 can ensure the synchronism of the guiding roller 34 during the movement process, avoiding the imbalance or inclination problems caused by relying solely on the guide rail 38. The existence of the guiding shaft can provide additional support and guiding effects, ensuring the stable sliding of the guiding roller 34 and enhancing the operation stability of the overall device.

[0030] In this embodiment, the cutting tool 37 is arranged below the guiding roller 34. A synchronous belt 36 driven by a motor is also arranged below the guiding roller 34. The cutting tool 37 is arranged below the guiding roller 34 and driven by the synchronous belt 36, ensuring that the cutting tool 37 can move stably and precisely along a predetermined path. The transmission system of the synchronous belt 36 provides a smooth power output, making the cutting process of the cutting tool 37 smoother, greatly improving the cutting accuracy and consistency. The motor-driven synchronous belt 36 system can realize the automatic movement of the cutting tool 37, reducing the need for manual intervention and adjustment. By presetting the operating parameters of the motor and the synchronous belt 36, the cutting operations of diaphragms with different specifications can be quickly completed, significantly improving the working efficiency.

[0031] Referring to Figure 2-3 , a bottom plate is fixedly connected to the bottom of the side plate 31. The bottom plate is installed on the frame 1 through an adjustable support member 33. The adjustable support member 33 enables the height and angle of the bottom plate and the side plate 31 to be adjusted according to actual needs, can adapt to the slitting requirements of different working environments and diaphragms with different thicknesses, provides a flexible adjustment method, and ensures the slitting accuracy.

[0032] Specifically, the support member 33 includes a support rod 331 installed on the frame 1. Two nuts 332 are threadedly connected to the support rod 331. The support rod 331 passes through the bottom plate, and the bottom plate is fixed to the bottom plate through the two nuts 332. By threadedly connecting two nuts 332 to the support rod 331, precise adjustment of the height and position of the bottom plate can be achieved. The two nuts 332 are respectively located on the upper and lower sides of the support member 33. By rotating the nuts 332, the height and horizontal position of the bottom plate can be finely adjusted.

[0033] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lithium battery separator cutting device, comprising a frame, characterized in that: An unwinding roller and a winding roller are respectively provided at both ends of the frame, and a slitting component is also installed on the end of the frame close to the winding roller; The slitting component at least comprises a guide roller that can be raised and lowered and a cutter that can be moved along the length direction of the guide roller; the diaphragm between the guide roller and the winding roller is pressed into the cutting range of the cutter by raising and lowering the guide roller.

2. The slitting device according to claim 1, characterized in that: The slitting component also includes two side plates symmetrically arranged on the frame, and movable grooves are opened on the side plates, and the guide rollers slide in the movable grooves.

3. The slitting device according to claim 2, characterized in that: A guide rail is installed on the side plate, and the movable end of the guide rail is connected to the end of the guide roller through a parallel plate.

4. The slitting device according to claim 3, characterized in that: A guide shaft is also installed on the parallel plate, and the guide shaft slides synchronously with the guide roller.

5. The slitting device according to claim 1, characterized in that: The cutter is arranged below the guide roller, and a synchronous belt driven by a motor is also arranged below the guide roller.

6. The slitting device according to claim 5, characterized in that: The cutter is arranged on a synchronous belt.

7. The slitting device according to claim 2, characterized in that: The bottom of the side plate is fixedly connected with a bottom plate, and the bottom plate is installed on the frame through an adjustable supporting component.

8. The slitting device according to claim 7, characterized in that: The supporting component comprises a supporting rod installed on the frame, and two nuts are threadedly connected on the supporting rod.

9. The slitting device according to claim 8, characterized in that: The support rod passes through the bottom plate, and the bottom plate is fixed on the bottom plate by two nuts.

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