Dry-method electrode film forming device
By adopting a transmission structure in the dry electrode film forming device that directly connects the motor and the reducer, and coaxially connects the drive shaft and the reducer, the problems of insufficient transmission accuracy and rigidity of the roller drive device are solved, thereby improving the yield and surface quality of the film.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CALB GROUP CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-15
AI Technical Summary
In existing dry electrode film forming equipment, the transmission accuracy and rigidity of the roller drive device are insufficient, which leads to problems such as horizontal lines and breakage of the film.
The transmission structure adopts a direct connection between the motor and the reducer, and a direct coaxial connection between the drive shaft and the reducer, eliminating the transmission coordination links. It uses an integrated RV geared motor as the power source, reducing or eliminating transmission backlash and improving transmission accuracy and rigidity.
It improves the transmission accuracy and rigidity of the roll drive device, improves the yield and surface quality of rolled products, and reduces transverse striations and breakage of the diaphragm.
Smart Images
Figure CN224237874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manufacturing equipment for electrodes including active materials, and in particular to a dry electrode film forming apparatus. Background Technology
[0002] Dry electrode film forming equipment, as an important component of dry electrode film forming equipment, mainly includes a rolling device. The rolling device consists of a frame and rotatable rolls mounted on the frame. The rolls work in pairs to roll the material passing between them, thereby obtaining the desired film. The rotation of the rolls is driven by a roll drive device. Currently, in the field of rolling equipment, the main components of the roll drive device include a motor, a reducer, and a coupling. During operation, the motor acts as the power source, and the power is transmitted sequentially to the rolls through the reducer and coupling, thereby driving the rolls to rotate.
[0003] Because the production process of electrode films requires extremely high precision from the rolling equipment, the above-mentioned roll drive device has problems with insufficient transmission precision and rigidity. During the film rolling stage of electrode films, phenomena such as roll jumping and jamming often occur, resulting in horizontal lines and breakage of the film. Utility Model Content
[0004] One of the objectives of this invention is to provide a dry electrode film forming device to solve the problem of horizontal lines and breakage of the film caused by insufficient transmission accuracy and rigidity of the roller drive device in existing dry electrode film forming devices.
[0005] To solve the above problems, the dry electrode film forming apparatus of this utility model adopts the following technical solution: The dry electrode film forming apparatus includes a rolling device, which includes a device frame and rolls mounted on the device frame. The rolls are equipped with a roll driving device. The roll driving device includes a connecting frame for fixed connection with the roll bearing seat supporting the rolls. A motor, a reducer, and a transmission mechanism are mounted on the connecting frame. The motor is directly connected to the reducer. The transmission mechanism includes a transmission shaft. The transmission shaft and the output component of the reducer are coaxially and rotatably mounted on the connecting frame. The output component of the reducer is directly connected to the input end of the transmission shaft. The output end of the transmission shaft is coaxially and fixedly connected to the end of the corresponding roll.
[0006] Beneficial Effects: The dry electrode film forming device of this invention is an improved invention. Specifically, in the dry electrode film forming device of this invention, the roll drive device completely abandons the existing structure in which the motor, reducer, coupling, and roll are connected sequentially. Instead, it adopts a transmission structure in which the motor and reducer are directly connected, and the transmission shaft is coaxially connected to the reducer and roll, greatly reducing the number of transmission coordination links. The problems of insufficient transmission accuracy and rigidity of existing roll drive devices are mainly caused by too many transmission coordination links, assembly gaps or coaxiality errors within or between links, especially poor transmission rigidity of the coupling. By adopting the above-mentioned direct connection structure, the roll drive device of this invention basically eliminates the factors that cause insufficient transmission rigidity and accuracy of the roll drive device, thereby improving the transmission accuracy and rigidity of the roll drive device, and thus improving the yield and surface quality of rolled products. Attached Figure Description
[0007] Figure 1 This is a perspective view of the rolling device of one embodiment of the dry electrode film forming apparatus (to ensure the clarity of the lines in the drawing, only one rolling drive device is shown in the figure).
[0008] Figure 2 yes Figure 1 A schematic diagram of the module formed by the roll bearing housing and the roll;
[0009] Figure 3 yes Figure 2 A schematic diagram of the structure of the roll bearing housing in the middle;
[0010] Figure 4 This is a three-dimensional diagram of a structure of a roll drive device;
[0011] Figure 5 yes Figure 4 A three-dimensional view of the roll drive device from another perspective;
[0012] Figure 6 yes Figure 4 A schematic diagram of the structure of the motor mounting plate in the diagram;
[0013] Figure 7 yes Figure 4 Front view of the roll drive device in the middle;
[0014] Figure 8 yes Figure 7 CC section view;
[0015] Figure 9 yes Figure 7 DD sectional view;
[0016] Figure 10 yes Figure 4 3D view of the drive shaft in the middle
[0017] Figure 11 yes Figure 4 A stereoscopic view of the drive shaft from another perspective.
[0018] Figure 12 This is a structural schematic diagram of the motor connection plate;
[0019] Figure 13 This is a schematic diagram of the structure of the self-aligning bearing housing, which shows the mating structure between the self-aligning bearing housing and the roll bearing housing;
[0020] Figure 14 yes Figure 13 The main view of the component shown;
[0021] Figure 15 yes Figure 14 AA section view (only a portion is shown).
[0022] In the diagram: 1. Roll; 2. Roll bearing housing; 3. Connecting frame; 31. Motor mounting plate; 32. Center hole; 33. Bearing housing connecting plate; 34. Shaft seat; 35. Reinforcing connector; 351. Device frame connecting part; 352. Suspension plate; 4. Integrated RV geared motor; 5. Transmission mechanism; 51. Drive shaft; 52. One-way bearing; 53. Motor connecting plate; 54. Input end anti-rotation key; 55. Input end anti-rotation groove; 56. Connecting hole; 57. Output end anti-rotation key; 58. Centering and positioning protrusion; 6. Device frame; 7. Roll drive device; 8. Self-aligning bearing housing; 9. Self-aligning bearing; 10. Self-aligning set screw; 11. End cover; 12. Roll support bearing. Detailed Implementation
[0023] The features and performance of this utility model will be further described in detail below with reference to the embodiments.
[0024] In dry electrode film forming equipment, the performance of the rolling device directly determines the quality of the formed electrode film. For example... Figure 1 As shown, if the rolling mill roll 1 of the rolling device jumps or jams during production, it will directly cause horizontal lines on the surface of the electrode diaphragm or even cause the electrode diaphragm to break. This is a problem that should be avoided at all costs.
[0025] In existing dry electrode film forming apparatuses, the drive unit (roll drive unit) for the rolls of the rolling mill includes components such as a motor, reducer, and coupling. The motor, reducer, and coupling are connected sequentially. Unavoidable clearances exist at various points, including the connection between the motor and reducer, the connection between the reducer and coupling, the internal transmission components of the reducer, and the internal parts of the coupling. For example, radial clearance within the coupling can cause slight relative displacement of the shafts at both ends when transmitting torque. When the load on the rolling mill changes rapidly, the two mating rolls 1 cannot be fully synchronized, resulting in momentary fluctuations in roll speed or position. Furthermore, during high-speed rotation, small radial clearances can be amplified into significant angular displacement deviations due to centrifugal force or load impact, directly affecting the rotational stability of roll 1. As can be seen from the above, in a rolling mill, the transmission accuracy and rigidity of the roll drive unit directly affect the stability and reliability of roll 1 operation, and consequently, the quality of the rolled products.
[0026] Existing technologies commonly employ solutions to address the aforementioned problems by using precision instruments, such as laser alignment devices, to monitor the alignment of couplings, regularly inspecting and replacing worn coupling components, or selecting high-rigidity couplings, such as diaphragm couplings or cross-shaft couplings; alternatively, hydraulic or electromagnetic dampers are added to the transmission system to suppress vibrations caused by clearances. While these solutions offer some relief, their effectiveness is limited. For example, even brand-new couplings retain internal clearances when regularly inspecting and replacing worn coupling components, which can negatively impact the operation of the rolling mill. This invention's dry electrode film-forming device employs a novel inventive concept, reducing the transmission links in the roll drive device. Compared to existing roll drive devices, it eliminates most of the transmission clearances, thereby improving transmission accuracy and rigidity, and ultimately enhancing the quality of the products produced by the rolling mill.
[0027] Based on the above inventive concept, a basic implementation of the dry electrode film forming apparatus of this utility model is as follows:
[0028] The dry electrode film forming apparatus includes a rolling device, which includes a frame 6 and rolls 1 mounted on the frame. The rolls 1 are mounted on the frame 6 via roll bearing seats 2 and roll support bearings 12 installed in the roll bearing seats 2. The roll support bearings 12 can be four-row cylindrical bearings (see...). Figure 15 ), which plays a major supporting role for the rolling mill roll 1 during the operation of the rolling mill device.
[0029] The roll is equipped with a roll drive device 7, such as Figure 4-9 As shown, the roll drive device includes a corresponding roll bearing housing 2 (such as...). Figure 2 ,3 As shown, the connecting frame 3 is fixedly connected to the roll bearing seat 2 corresponding to the roll 1 to be driven by the roll drive device. Simultaneously, other components of the roll drive device are integrated and installed on it, achieving positioning and docking between the roll drive device and the roll 1 to be driven. Based on the requirements of achieving the above functions, the connecting frame 3 should possess a certain strength and a positioning structure for the components installed on it. Depending on the needs, it can adopt a closed box structure, a semi-open semi-box structure, or a fully open frame structure, etc. Provided that its function is met, the connecting frame 3 can adopt any other structural form, which should be understood by those skilled in the art.
[0030] Other parts of the roll drive device include a motor, a reducer, and a transmission mechanism 5 mounted on a connecting frame. The motor is directly connected to the reducer. The transmission mechanism 5 includes a transmission shaft 51, which is coaxially and rotatably mounted on the connecting frame 3 with the output component of the reducer. The output component of the reducer is directly connected to the input end of the transmission shaft 51, and the output end of the transmission shaft 51 is coaxially and fixedly connected to the end of the corresponding roll 1. This utility model integrates the motor and reducer of the roll drive device, that is, uses the output shaft of the motor as the input shaft of the reducer. The two are rigidly directly connected, which can be an interference fit, a flange connection, or an integral structure. This can reduce or even eliminate transmission clearance and ensure transmission accuracy and rigidity. Similarly, the output component of the reducer is directly connected to the input end of the transmission shaft 51, and the output end of the transmission shaft 51 is coaxially and fixedly connected to the end of the corresponding roll 1, which can achieve a similar effect. This can significantly improve the overall rigidity and accuracy of the transmission structure.
[0031] In one embodiment, the roll drive device uses an integrated RV geared motor 4 as its power source, which is mounted on the connecting frame 3. The integrated RV geared motor 4, through ultra-high precision and connection technology, achieves functional integration, with performance approaching that of an ideal integrated shaft. Specifically, its motor rotor shaft extends directly into the reducer, passing through the sun gear of the planetary gear, eliminating the need for a coupling. That is, the motor shaft and the reducer input shaft are the same shaft, thus eliminating transmission backlash between them. During machining, the motor and reducer housings can be processed using an integrated boring process, ensuring extremely high coaxiality of the internal bearing seats (e.g., ≤5μm). It features high rigidity, low inertia, and maintenance-free operation. When used in the roll drive device of this invention, it can significantly improve transmission accuracy and rigidity.
[0032] In addition to the integrated RV geared motor 4, such as Figure 4 , 5As shown, a transmission mechanism 5 is also installed on the connecting frame 3. The transmission mechanism 5 serves as a bridge connecting the integrated RV geared motor 4 and the corresponding roll 1. Its core component is a transmission shaft 51. By mounting the transmission shaft 51 and the integrated RV geared motor 4 on the same connecting frame 3, the precision of their fit can be further ensured. Therefore, the transmission shaft 51 and the output component of the integrated RV geared motor 4 are coaxially rotated and assembled on the connecting frame 3. The output component of the integrated RV geared motor 4 is connected to the input end of the transmission shaft 51, and the output end of the transmission shaft 51 is used for coaxial fixed connection with the end of the corresponding roll 1. Since the input end of the transmission shaft 51 (i.e., the end connected to the power source during use) is coaxial with the output component of the integrated RV geared motor 4 and with the corresponding roll 1, a structure is achieved where the output component of the integrated RV geared motor 4, the transmission shaft 51, and the roll 1 are arranged coaxially. This structure is more conducive to ensuring precise fit at the connection point and reducing the generation of fit gaps.
[0033] When using this roll drive device, the connecting frame 3 can be positioned and fixed with the roll bearing seat 2 of the roll 1 to be driven. The integrated RV geared motor 4 is used as the power source. The power of the integrated RV geared motor is transmitted to the roll 1 coaxially through the transmission mechanism 5, thereby ensuring the accuracy and rigidity of the transmission mechanism, ensuring the smooth rotation of the roll 1, and thus ensuring the processing quality of the rolled products.
[0034] When the drive shaft 51 is fixedly connected to one of the integrated RV geared motor 4 and the rolling mill roll 1, a certain radial clearance is set at the anti-rotation fit position between it and the other as a fit tolerance to avoid jamming during operation. This fit tolerance design creates a certain rotational clearance between the drive shaft 51 and the connected components. When the two rolling mill rolls 1 of the rolling device are working, one rolling mill roll 1 will affect the other rolling mill roll 1, giving it a certain counterforce. To eliminate this counterforce, based on the above embodiment, as a preferred embodiment, the drive shaft 51 is rotatably mounted on the connecting frame 3 via a one-way bearing 52. In this embodiment, as a preferred example, the one-way bearing 52 can preferably be a roller-type one-way bearing or a wedge-type one-way bearing capable of withstanding a large radial load.
[0035] Because a certain clearance must be maintained between the rollers of the roll support bearing and the inner and outer rings to prevent them from jamming, its role in roll centering is limited. To compensate for this deficiency, based on the above-described embodiments, as a preferred embodiment, such as... Figure 2 , Figures 13-15As shown, a self-aligning bearing seat 8 is fixed on the outer side of the roll bearing seat 2, specifically on the side closer to the drive shaft 51 during use. The self-aligning bearing seat 8 is fastened to the roll bearing seat 2 with screws, and a self-aligning bearing 9 is disposed therein. By providing self-aligning set screws 10 on the upper and lower parts of the upper radial side of the self-aligning bearing seat 8, a force can be applied to the self-aligning bearing 9 to press against the roll 1. The self-aligning bearing 9 then transmits this pressing force to the roll 1, thereby limiting the runout of the roll 1. The roll gap can be adjusted simultaneously through the self-aligning bearing 9. The outer side of the self-aligning bearing 9 is closed by an end cap 11 provided on the self-aligning bearing seat 9.
[0036] Based on the above embodiments, as a preferred embodiment, the present invention optimizes the structure of the connecting frame 3, specifically, as follows: Figures 4-9 As shown, the connecting frame 3 includes a motor mounting plate 31 for mounting the integrated RV geared motor 4. Since the rolls 1 of the rolling mill are all horizontal rolls, the motor mounting plate 31 is a vertically arranged mounting plate. A center hole 32 is provided at the center of the motor mounting plate 31. The center hole is a stepped hole, and a flange connection hole is provided around the central axis on the stepped surface formed between its smaller and larger diameter sections. The center hole can be positioned and engaged with the motor housing of the integrated RV geared motor 4, and the flange connection hole can engage with the motor housing, thus fixing the integrated RV geared motor 4 onto the motor mounting plate 31. Figure 6 In the embodiment shown, the motor mounting plate 31 is a rectangular plate. However, those skilled in the art should understand that in other embodiments, the motor mounting plate 31 can of course be a circular plate, an elliptical plate, or even an irregularly shaped plate, as long as the shape of the useful part in the middle is retained.
[0037] To facilitate the connection between the motor mounting plate 31 and the corresponding roll bearing seat 2, the connecting frame 3 also includes a bearing seat connecting plate 33. For modular assembly and to allow for individual disassembly of the integrated RV geared motor 4 in case of failure or maintenance, the motor mounting plate 31 and the bearing seat connecting plate 33 are detachably connected. Alternatively, without considering the above factors, the motor mounting plate 31 and the bearing seat connecting plate 33 can be designed as a single unit. A bearing seat 34 for the drive shaft is mounted on the bearing seat connecting plate 33. The drive shaft 51 is mounted on the bearing seat 34. Since the drive shaft 51 is inevitably located on the side of the integrated RV geared motor 4 closest to the roll 1 during use, i.e., the side of the motor mounting plate 31 closest to the drive shaft 51, placing the bearing seat of the drive shaft 51 on the bearing seat connecting plate 33 fully utilizes the space at that location. Furthermore, integrating the bearing seat 34 of the drive shaft 51 with the bearing seat connecting plate 33 makes it easier to position the drive shaft 51 and ensure its transmission accuracy.
[0038] When the connecting frame 3 adopts the above-described structure of motor mounting plate-bearing seat connecting plate, as a more preferred embodiment, bearing seat connecting plates 33 are respectively provided at the upper and lower ends of the motor mounting plate 31, and the upper and lower ends of the bearing seat 34 are detachably connected to the bearing seat connecting plates 33 at the upper and lower ends of the motor mounting plate 31. By providing bearing seat connecting plates 33 at the upper and lower ends of the motor mounting plate 31, the overall strength of the connecting frame 3 can be guaranteed, and it can also be better adapted to the device frame of the rolling device, facilitating the installation of the connecting frame 3. Although in one embodiment of this implementation, bearing seat connecting plates 33 are respectively provided at the upper and lower ends of the motor mounting plate 31, those skilled in the art should understand that in other embodiments, when the strength and rigidity of the motor mounting plate 31 and the bearing seat connecting plates 33 are sufficient, for example, when the selection of their materials meets the above requirements, the bearing seat connecting plates 33 can also be provided only at the upper or lower end, or the front or rear end of the motor mounting plate 31.
[0039] The drive shaft 51 is subjected to the reaction forces of the loads at both ends during operation, thus requiring high installation reliability. Based on the consideration of increasing the positional reliability of the drive shaft 51, and in a preferred embodiment based on the above implementation, the shaft seat 34 is equipped with a reinforcing connector 35. The reinforcing connector 35 has a device frame connecting portion 351 for connecting the device frame 6 of the rolling device and a suspension plate 352 extending to the circumferential periphery of the shaft seat. The suspension plate 352 is fixedly connected to the shaft seat 34. Figure 4-9 In the illustrated embodiment, the reinforcing connector 35 adopts an L-shaped plate structure. One end is fixedly connected to the device frame 6 of the rolling device by screws, and the other end is fixedly connected to the bearing seat 34 by screws. It should be noted that although the reinforcing connector 35 is provided for the bearing seat 34 in some embodiments, those skilled in the art should understand that the reinforcing connector 35 can be omitted if the strength of the connecting frame 3 meets the requirements. Based on this embodiment, as a more preferred embodiment, the bearing seat adopts a vertical plate structure. The suspension plate 352 is located above and below the bearing seat 34, and shares connecting screws with the corresponding bearing seat connecting plate 33 to connect to the bearing seat 34. This improves installation efficiency and also integrates the connecting frame 3 and the reinforcing connector into a single unit, further ensuring the overall structural strength of the device.
[0040] The transmission connection structure between the output component of the integrated RV geared motor 4 and the transmission shaft 51 has a significant impact on transmission accuracy. In a preferred embodiment, the transmission mechanism further includes a motor connecting plate 53 that engages with the transmission shaft 51 to prevent rotation. Figure 12As shown, an input end anti-rotation key 54 is provided on one of the surface of the motor connecting plate 53 and the end face of the transmission shaft 51, and an input end anti-rotation groove 55 is provided on the other side to cooperate with the input end anti-rotation key. The transmission shaft 51 and the motor connecting plate are anti-rotated through the input end anti-rotation key and the input end anti-rotation groove. Figure 10-11 In the illustrated embodiment, the output anti-rotation key 54 is located on the end face of the input end of the drive shaft 51, and the input anti-rotation groove 55 is located on the surface of the motor connecting plate 53. In other embodiments, the output anti-rotation key can be located on the surface of the motor connecting plate, and the input anti-rotation groove can be located on the end face of the input end of the drive shaft. To prevent the drive shaft 51 from jamming during transmission, a radial tolerance clearance is provided between the input anti-rotation groove 55 and the input anti-rotation key 54. As a typical connection method, the motor connecting plate 53 is flange-connected to the output disc of the integrated RV geared motor 4.
[0041] To achieve an accurate and reliable connection with the rolls, in a preferred embodiment, the drive shaft 51 has connection holes 56 distributed around its center for fixed connection with the corresponding rolls. In use, screws or other fasteners can be inserted into these connection holes to reliably connect the drive shaft 51 to the corresponding rolls. Based on this embodiment, in a more preferred embodiment, an output end anti-rotation key 57 or an output end anti-rotation groove is provided on the output end face of the drive shaft 51 for anti-rotation engagement with the corresponding roll. For example, in... Figure 10-11 In the illustrated embodiment, an output end anti-rotation key 57 is provided on the end face of the output end of the drive shaft. In other embodiments, the output end anti-rotation key 57 can also be replaced by an output end anti-rotation groove, which can be selected according to the anti-rotation fit structure provided on the roll. Furthermore, the output end anti-rotation key or output end anti-rotation groove passes through the center of the drive shaft and has an alignment positioning protrusion 58 or an alignment positioning groove for alignment with the roll. The alignment positioning protrusion 58 or the alignment positioning groove can further assist in the precise alignment between the drive shaft and the roll, improving the transmission accuracy.
[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.
Claims
1. A dry electrode film forming apparatus, comprising a rolling device, the rolling device including an apparatus frame and rolling rolls mounted on the apparatus frame, the rolling rolls being equipped with a rolling roll drive device, characterized in that, The roll drive device includes a connecting frame for fixed connection with the roll bearing housing supporting the roll. A motor, a reducer, and a transmission mechanism are mounted on the connecting frame. The motor is directly connected to the reducer. The transmission mechanism includes a transmission shaft. The transmission shaft and the output component of the reducer are coaxially and rotatably mounted on the connecting frame. The output component of the reducer is directly connected to the input end of the transmission shaft. The output end of the transmission shaft is coaxially and fixedly connected to the end of the corresponding roll.
2. The dry electrode film forming apparatus according to claim 1, characterized in that, The drive shaft is rotatably mounted on the connecting frame via a one-way bearing.
3. The dry electrode film forming apparatus according to claim 1, characterized in that, A self-aligning bearing housing is installed on the side of the roll bearing housing near the drive shaft. The self-aligning bearing housing contains a self-aligning bearing that acts on the roll. The self-aligning bearing housing is provided with a self-aligning set screw for adjusting the radial position of the self-aligning bearing.
4. The dry electrode film forming apparatus according to claim 1, 2, or 3, characterized in that, The motor and reducer are integrated RV geared motors and reducers.
5. The dry electrode film forming apparatus according to claim 4, characterized in that, The connecting frame includes a vertical motor mounting plate for mounting the integrated RV geared motor and a bearing seat connecting plate for connecting the motor mounting plate to the corresponding roll bearing seat. The motor mounting plate and the bearing seat connecting plate are detachably connected. A bearing seat for the drive shaft is mounted on the bearing seat connecting plate, and the drive shaft is mounted on the bearing seat.
6. The dry electrode film forming apparatus according to claim 5, characterized in that, The bearing seat connecting plates are respectively provided at the upper and lower ends of the motor mounting plate, and the upper and lower ends of the bearing seat are detachably connected to the bearing seat connecting plates at the upper and lower ends of the motor mounting plate.
7. The dry electrode film forming apparatus according to claim 6, characterized in that, The bearing seat is equipped with a reinforcing connector, which has a device frame connecting portion for connecting the device frame of the rolling device and a suspension plate extending to the circumferential periphery of the bearing seat, the suspension plate being fixedly connected to the bearing seat.
8. The dry electrode film forming apparatus according to claim 7, characterized in that, The suspension plate is located above and below the bearing seat, and is connected to the bearing seat by sharing connecting screws with the corresponding bearing seat connecting plate.
9. The dry electrode film forming apparatus according to claim 1, 2, or 3, characterized in that, The transmission mechanism also includes a motor connecting plate that engages with the transmission shaft to prevent rotation. One of the surfaces of the motor connecting plate and the end face of the transmission shaft is provided with an input end anti-rotation key, and the other is provided with an input end anti-rotation groove that engages with the input end anti-rotation key. The transmission shaft and the motor connecting plate are engaged with each other through the input end anti-rotation key and the input end anti-rotation groove to prevent rotation.
10. The dry electrode film forming apparatus according to claim 9, characterized in that, The reducer has an output disc, and the motor connecting plate is flange-connected to the output disc of the reducer.
11. The dry electrode film forming apparatus according to claim 1, 2, or 3, characterized in that, The drive shaft has connection holes distributed around its center for fixed connection with the corresponding rolls.
12. The dry electrode film forming apparatus according to claim 11, characterized in that, The output end face of the drive shaft is provided with an output end anti-rotation key or output end anti-rotation groove for cooperating with the corresponding roll anti-rotation.
13. The dry electrode film forming apparatus according to claim 12, characterized in that, The output end anti-rotation key or output end anti-rotation groove passes through the center of the drive shaft and has an alignment positioning protrusion or alignment positioning groove for alignment with the roll.