Double-shaft fixed type automatic winding and unwinding mechanism and operation method thereof

Abstract

The invention belongs to the technical field of lithium battery coating machine equipment, and particularly provides a double-shaft fixed type automatic winding and unwinding mechanism which comprises two outer wallboards arranged at intervals, a winding shaft A, a winding shaft B and a cutter mechanism, the winding shaft A and the winding shaft B are rotationally installed between the two outer wallboards through a motor, and the cutter mechanism is installed between the winding shaft A and the winding shaft B; the cutter mechanism comprises two vertically-arranged inner wall plates, a rotating gear motor, a pressing roller assembly and a blade assembly, and the two inner wall plates are rotationally connected with the two outer wall plates through a cross beam assembly and driven by the rotating gear motor to swing towards the winding shaft A or the winding shaft B. The cutter mechanism is more compact in structure and low in cost, energy consumption is reduced, meanwhile, the falling risk of coil stock is reduced, safety is improved, in addition, the cutter mechanism only needs to rotate by about 33 degrees, and efficiency is improved. The invention further relates to an operation method of the double-shaft fixed type automatic winding and unwinding mechanism. The beneficial effects of the double-shaft fixed type automatic winding and unwinding mechanism are as mentioned above.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery coating machine equipment, and relates to a double-axis fixed automatic rewinding and unreeling mechanism. The present invention also relates to an operation method of a double-axis fixed automatic rewinding and unreeling mechanism. Background Art

[0002] At present, most of the rewinding and unreeling mechanisms used in lithium battery equipment on the market are turret-type rewinding and unreeling mechanisms. For example, an automatic flipping and tape-connecting rewinding and replacing mechanism with the authorization publication number of CN206494556U specifically discloses a rotatable disk; a first rewinding shaft and a second rewinding shaft, and the first rewinding shaft and the second rewinding shaft are arranged on the rotatable disk and are linked with the rotatable disk. The rewinding method of the above patent has two axes arranged horizontally, and the positions of the two axes are interchanged through the "turret"-type structural design. The cutting knife part is close, and then the special blade on it is pushed to cut the pole piece to perform rewinding.

[0003] The existing structure is based on its horizontal design of two axes, and relies on the "turret"-type structure to drive the position interchange of the two axes. The large-weight and large-roll-diameter coils require the design of high-strength and large-size parts to meet the design requirements of strength, stiffness and stability, resulting in a complex internal structure, long processing time, high cost and large power consumption of the parts; secondly, based on the design of its large-size parts, the "turret"-type structure usually rotates very slowly to ensure production safety. Although the production can be carried out by rotating the "turret" in advance before reaching the target value of the rewinding and unreeling diameter, due to the need to ensure safety, the production speed needs to be greatly reduced, resulting in low production efficiency; furthermore, due to the large weight of the full coil, the current single large coil can reach a weight of about two tons, making it often accompanied by high risks when rotating and changing positions. For example, incorrect operation may exist: "material dropping", and there is a risk of "mechanical injury" when the mechanical rotation is rotating. Summary of the Invention

[0004] In view of the technical problems in the prior art, the present invention provides a double-axis fixed type automatic rewinding and unreeling mechanism, which includes two outer wall plates arranged at intervals, a rewinding shaft A, a rewinding shaft B and a cutting mechanism. The rewinding shaft A and the rewinding shaft B are both rotatably installed between the two outer wall plates by motors. Removably installed on the rewinding shaft A and the rewinding shaft B are drums for rewinding the pole pieces. The cutting mechanism is installed between the rewinding shaft A and the rewinding shaft B. The cutting mechanism includes two inner wall plates arranged vertically, a rotary reduction motor, a pressure roller assembly and a blade assembly. The two inner wall plates are rotatably connected to the two outer wall plates through a cross beam assembly and swing towards the rewinding shaft A or the rewinding shaft B under the drive of the rotary reduction motor. Connecting plates are installed on both of the two inner wall plates. The two connecting plates are slidably connected to the inner wall plates through a lifting mechanism. Under the action of the lifting mechanism, the two connecting plates slide out or contract the bottom of the inner wall plates along the length direction of the inner wall plates. The pressure roller assembly and the blade assembly are both slidably connected to the two connecting plates through cylinders, and the blade assembly is located above the pressure roller assembly. When the pole piece wound on the pressure roller assembly slides out of the connecting plate and is connected to the drum under the action of the cylinder, the blade assembly moves along the direction close to the pole piece under the action of the cylinder and cuts off the pole piece.

[0005] Further, the pressure roller assembly includes a pressure roller A, a pressure roller B and sliders. The pressure roller A and the pressure roller B are symmetrically installed at one end of the connecting plate close to the bottom. Sliders are rotatably installed at both ends of the pressure roller A and the pressure roller B. The sliders are slidably connected to the connecting plate through cylinders. The blade assembly includes a blade A, a blade B and sliders. Both ends of the blade A and the blade B are slidably connected to the connecting plate through sliders and are respectively located above the pressure roller A and the pressure roller B. The pole piece passes through between the blade A and the blade B and between the pressure roller A and the pressure roller B in sequence and is connected to the drum. The blade A slides out of the connecting plate under the action of the cylinder and cuts off the pole piece between the pressure roller A and the rewinding shaft A, or the blade B slides out of the connecting plate under the action of the cylinder and cuts off the pole piece between the pressure roller B and the rewinding shaft B.

[0006] Further, a guide roller assembly is also rotatably installed between the two inner wall plates, and an adjustment roller assembly is also rotatably installed between the two connecting plates. The adjustment roller assembly is located between the guide roller assembly and the blade assembly. The pole piece bypasses the guide roller assembly and the adjustment roller assembly and then passes through between the blade A and the blade B and between the pressure roller A and the pressure roller B in sequence and is connected to the drum.

[0007] Further, before the drum on the rewinding shaft B approaches the target value, the cutting mechanism swings towards the rewinding shaft A under the drive of the rotary reduction motor, and the pressure roller B is aligned with the midpoint of the rewinding shaft A. Conversely, before the drum on the rewinding shaft A approaches the target value, the cutting mechanism swings towards the rewinding shaft B under the drive of the rotary reduction motor, and the pressure roller A is aligned with the midpoint of the rewinding shaft B.

[0008] Further, a double-sided adhesive is bonded to the reel, and the pole piece is fixedly connected to the double-sided adhesive under the action of the pressing roller B or the pressing roller A.

[0009] Further, the lifting mechanism includes two sets of guide rail assemblies, a lifting reduction gear, a fixed shaft, two sets of flat push gear assemblies, two sets of gear rack assemblies and a sprocket assembly. Two connecting plates are respectively slidably connected to two inner wall plates through the two sets of guide rail assemblies. The lifting reduction gear is fixedly installed between the two inner wall plates. The fixed shaft is rotatably installed between the two inner wall plates and is located below the lifting reduction gear. The two sets of flat push gear assemblies are fixedly sleeved on the fixed shaft. The two sets of gear rack assemblies are respectively fixedly connected to the two connecting plates. The flat push gear assemblies and the gear rack assemblies correspond to each other and are meshed with each other. The output shaft of the lifting reduction gear is connected to the fixed shaft through the sprocket assembly and drives the fixed shaft to rotate.

[0010] Further, a sprocket guard assembly is installed on the sprocket assembly.

[0011] Further, two support frames are detachably installed on the outer wall plate far away from the rotary reduction motor, and the winding shaft A and the winding shaft B are respectively placed on the two support frames.

[0012] Beneficial effects: 1. In the present invention, through the setting of the rotary reduction motor and the two inner wall plates located between the winding shaft A and the winding shaft B, the cutting mechanism can be closer to the winding shaft A and the winding shaft B, and there is no need for a turret to drive the coil material to rotate. The middle main shaft part and the driving part of the turret can be removed, making the structure more compact, with low cost and reduced energy consumption. At the same time, since the coil material does not need to rotate left and right during switching, the risk of the coil material falling off is reduced, improving safety. In addition, compared with the 180-degree rotation in the existing structure, the cutting mechanism of the present application only needs to rotate about 33 degrees to complete the coil changing action, reducing the coil changing time and improving the efficiency.

[0013] 2. In the present invention, through the setting of the pressing roller A, the pressing roller B, the slider and the cylinder, the pole piece fixing operation on the winding shaft A and the winding shaft B can be automatically carried out, improving the convenience; through the setting of the passing roller assembly and the adjusting roller assembly, the pole piece can be conveniently unfolded to ensure the flatness of the pole piece and improve the quality of the coil material; combined with the setting that the pressing roller B or the pressing roller A is aligned with the midpoint of the winding shaft A or the winding shaft B, the connection between the pole piece and the reel can be facilitated; combined with the setting of the double-sided adhesive, the fixing or disassembly of the pole piece and the reel can be facilitated.

[0014] 3. In the present invention, through the arrangement of two sets of guide rail assemblies, a lifting speed reducer, a fixed shaft, two sets of flat push gear assemblies, two sets of gear rack assemblies and a sprocket assembly, it is convenient to realize the sliding out or retracting of two connecting plates from the inner wall panel. The specific process is as follows: when the lifting speed reducer works and rotates, the fixed shaft is driven to rotate through the sprocket assembly. At this time, the two sets of flat push gear assemblies fixedly connected to the fixed shaft will rotate synchronously, and drive the two connecting plates to slide along the channel direction of the guide rail assembly through the meshing between the gear and the rack; combined with the arrangement of the sprocket guard assembly, it can avoid flying dust or impurities from entering, ensure the working effect of the sprocket assembly and improve the service life.

[0015] 4. In the present invention, through the arrangement of two support frames, it is convenient to temporarily fix the winding shaft A and the winding shaft B, improve the structural strength during winding and unwinding, and further improve the safety.

[0016] The present invention also provides an operation method for a double-shaft fixed automatic winding and unwinding mechanism, including the following steps: S1. For the first time, manually lead the pole piece through the cutter assembly and the pressure roller assembly in sequence, and manually fix the pole piece on the reel of the winding shaft A or the reel of the winding shaft B, and press the operation button to perform winding or unwinding; S2. Before the winding and unwinding reaches a value close to the target coil diameter, the rotating reduction motor works, and the two inner wall panels, the pressure roller assembly and the blade assembly rotate counterclockwise to the winding shaft B or clockwise to the winding shaft A under the drive of the rotating reduction motor; S3. Under the action of the lifting mechanism, the two connecting plates slide out from the bottom of the inner wall panel along the length direction of the inner wall panel, and the winding shaft B or the winding shaft A is controlled by the motor to rotate so that its rotation speed is the same as that of the pressure roller assembly; S4. The pressure roller assembly slides out from the bottom of the connecting plate through the extension of the air cylinder and contacts the winding shaft B or the winding shaft A, and fits the pole piece with the double-sided tape pre-pasted on the reel, so that the pole piece is connected to the winding shaft B or the winding shaft A; S5. After a short time when the pressure roller assembly contacts the winding shaft B or the winding shaft A, the blade assembly quickly extends through the extension of the corresponding air cylinder, cuts off the pole piece, and the winding shaft A or the winding shaft B starts to quickly decelerate to 0, and the tail material is slowly wound up during this period; S6. The blade assembly, the pressure roller assembly and the two connecting plates are reset through the air cylinder and the lifting mechanism to ensure that the connecting plates retract into the inner wall panel, and then the two inner wall panels are returned to the vertical direction through the rotating reduction motor.

[0017] Beneficial effects: In the present invention, through the arrangement of the rotary reduction motor and the two inner wall plates between the winding shafts A and B, the cutting mechanism can be closer to the winding shafts A and B, and there is no need for the turret to drive the coil to rotate. The middle main shaft part and the driving part of the turret can be removed, making the structure more compact, with low cost and reduced energy consumption. At the same time, since the coil does not need to rotate left and right during switching, the risk of the coil falling off is reduced, improving safety. In addition, compared with the 180-degree rotation in the existing structure, the cutting mechanism of the present application only needs to rotate about 33 degrees to complete the coil changing operation, reducing the coil changing time and improving the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the present invention in the first direction; Figure 2 Schematic diagram of the overall structure of the present invention in the second direction; Figure 3 Schematic diagram of the overall structure of the present invention in the third direction; Figure 4 Partial installation structure cross-sectional view of the present invention during normal winding; Figure 5 Partial installation structure cross-sectional view of the present invention when the cutting mechanism swings clockwise; Figure 6 Partial installation structure cross-sectional view of the present invention when the connecting plate slides out of the inner wall plate; Figure 7 Partial installation structure cross-sectional view of the present invention when the pressure roller assembly slides out of the connecting plate and contacts the reel; Figure 8 Partial installation structure cross-sectional view of the present invention when the blade assembly cuts the pole piece; Figure 9 Partial installation structure cross-sectional view of the present invention when the cutting mechanism returns to the vertical direction after the coil change is completed.

[0020] Explanation of reference numerals: 1. Exterior wall panel; 2. Take-up reel A; 3. Take-up reel B; 4. Motor; 5. Electrode tab; 6. Reel; 7. Interior wall panel; 8. Rotary reduction motor; 9. Connecting plate; 10. Press roller A; 11. Press roller B; 12. Blade A; 13. Blade B; 14. Guide roller assembly; 15. Adjusting roller assembly; 16. Lifting reduction gear; 17. Fixed shaft; 18. Flat push gear assembly; 19. Gear-rack assembly; 20. Sprocket assembly; 21. Sprocket guard assembly; 22. Support frame. Detailed implementation manners

[0021] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 cannot be understood as a limitation to the present application.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In the present application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0027] The present invention provides a biaxial fixed-type automatic rewinding and unreeling mechanism, such as Figures 1 to 9As shown in the figure, it includes two spaced exterior wall panels 1, a winding shaft A 2, a winding shaft B 3 and a cutting mechanism. Both the winding shaft A 2 and the winding shaft B 3 are rotatably installed between the two exterior wall panels 1 by motors 4. A reel 6 for winding the pole piece 5 is detachably installed on the winding shaft A 2 and the winding shaft B 3. The cutting mechanism is installed between the winding shaft A 2 and the winding shaft B 3. The cutting mechanism includes two vertically arranged interior wall panels 7, a rotary reduction motor 8, a pressure roller assembly and a blade assembly. To ensure the structural strength between the two exterior wall panels 1 and the two interior wall panels 7, multiple support rods or support plates can be arranged between them for support and fixation. During specific installation, one end of the pole piece 5 sequentially passes through the blade assembly and the pressure roller assembly and is fixedly connected to the reel 6, and is wound on the reel 6 under the drive of the motor 4. The two interior wall panels 7 are rotatably connected to the two exterior wall panels 1 through a crossbeam assembly and swing towards the winding shaft A 2 or the winding shaft B 3 under the drive of the rotary reduction motor 8. Connecting plates 9 are installed on both of the two interior wall panels 7. The two connecting plates 9 are slidably connected to the interior wall panels 7 through a lifting mechanism. Under the action of the lifting mechanism, the two connecting plates 9 slide out or contract the bottom of the interior wall panels 7 along the length direction of the interior wall panels 7. Both the pressure roller assembly and the blade assembly are slidably connected to the two connecting plates 9 through cylinders, and the blade assembly is located above the pressure roller assembly. When the pole piece 5 wound on the pressure roller assembly slides out of the connecting plate 9 and is connected to the reel 6 under the action of the cylinder, the blade assembly moves along the direction close to the pole piece 5 under the action of the cylinder and cuts the pole piece 5. In addition, the cutting mechanism further includes an electrical control box assembly, and the electrical control box assembly is used to control the rotary reduction motor 8, the motor 4, the lifting mechanism, etc., to ensure the linkage between them.

[0028] In this embodiment, through the arrangement of the rotary reduction motor 8 and the two interior wall panels 7 located between the winding shaft A 2 and the winding shaft B 3, the cutting mechanism can be closer to the winding shaft A 2 and the winding shaft B 3, and there is no need for a turret to drive the coil to rotate. The middle main shaft part and the driving part of the turret can be removed, making the structure more compact, with low cost and reduced energy consumption. At the same time, since the coil does not need to rotate left and right during switching, the risk of the coil falling off is reduced, improving safety. In addition, compared with the 180-degree rotation in the existing structure, the cutting mechanism of the present application only needs to rotate about 33 degrees to complete the coil changing operation, reducing the coil changing time and improving the efficiency.

[0029] In the present invention, preferably, as Figures 1 to 9As shown, the pressure roller assembly includes pressure roller A10, pressure roller B11 and sliders. The pressure roller A10 and pressure roller B11 are symmetrically installed at one end of the connecting plate 9 near the bottom. Sliders are rotatably installed at both ends of the pressure roller A10 and pressure roller B11. The sliders are slidably connected to the connecting plate 9 through cylinders. The blade assembly includes blade A12, blade B13 and sliders. Both ends of the blade A12 and blade B13 are slidably connected to the connecting plate 9 through sliders and are respectively located above the pressure roller A10 and pressure roller B11. The pole piece 5 passes through between the blade A12 and blade B13 and between the pressure roller A10 and pressure roller B11 in sequence and is connected to the winding drum 6. The blade A12 slides out of the connecting plate 9 under the action of the cylinder and cuts off the pole piece 5 between the pressure roller A10 and the winding shaft A2, or the blade B13 slides out of the connecting plate 9 under the action of the cylinder and cuts off the pole piece 5 between the pressure roller B11 and the winding shaft B3.

[0030] In this embodiment, through the arrangement of the pressure roller A10, pressure roller B11, sliders and cylinders, the pole piece 5 can be automatically fixed to the winding shaft A2 and winding shaft B3, improving convenience.

[0031] In the present invention, preferably, as Figure 1 , Figure 3 , Figure 4 and Figure 9 shown, a roller assembly 14 is also rotatably installed between the two inner wall plates 7, and an adjustment roller assembly 15 is also rotatably installed between the two connecting plates 9. The adjustment roller assembly 15 is located between the roller assembly 14 and the blade assembly. The pole piece 5 bypasses the roller assembly 14 and the adjustment roller assembly 15 and then passes through between the blade A12 and blade B13 and between the pressure roller A10 and pressure roller B11 in sequence and is connected to the winding drum 6; before the winding drum 6 on the winding shaft B3 approaches the target value, the cutting mechanism swings towards the winding shaft A2 under the drive of the rotary reduction motor 8, and the pressure roller B11 is aligned with the midpoint of the winding shaft A2. Conversely, before the winding drum 6 on the winding shaft A2 approaches the target value, the cutting mechanism swings towards the winding shaft B3 under the drive of the rotary reduction motor 8, and the pressure roller A10 is aligned with the midpoint of the winding shaft B3; a double-sided adhesive is bonded to the winding drum 6, and the pole piece 5 is fixedly connected to the double-sided adhesive under the action of the pressure roller B11 or pressure roller A10.

[0032] In this embodiment, through the arrangement of the roller assembly 14 and the adjustment roller assembly 15, the pole piece 5 can be conveniently opened, ensuring the flatness of the pole piece 5 and improving the quality of the rolled material; combined with the setting that the pressure roller B11 or pressure roller A10 is aligned with the midpoint of the winding shaft A2 or winding shaft B3, the connection between the pole piece 5 and the winding drum 6 can be facilitated; combined with the setting of the double-sided adhesive, the fixing or disassembly of the pole piece 5 to the winding drum 6 can be facilitated.

[0033] In the present invention, preferably, asFigure 1 , Figure 2 , Figure 3 and Figure 4 As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the lifting mechanism includes two sets of guide rail assemblies, a lifting speed reducer 16, a fixed shaft 17, two sets of flat push gear assemblies 18, two sets of gear rack assemblies 19 and a sprocket assembly 20. Two connecting plates 9 are respectively slidably connected with two inner wall plates 7 through the two sets of guide rail assemblies. The lifting speed reducer 16 is fixedly installed between the two inner wall plates 7. The fixed shaft 17 is rotatably installed between the two inner wall plates 7 and is located below the lifting speed reducer 16. Two sets of flat push gear assemblies 18 are fixedly sleeved on the fixed shaft 17. Two sets of gear rack assemblies 19 are respectively fixedly connected with the two connecting plates 9. The flat push gear assemblies 18 and the gear rack assemblies 19 correspond one by one and mesh with each other. The output shaft of the lifting speed reducer 16 is connected with the fixed shaft 17 through the sprocket assembly 20 and drives the fixed shaft 17 to rotate; A sprocket guard assembly 21 is installed on the sprocket assembly 20.

[0034] In this embodiment, through the arrangement of the two sets of guide rail assemblies, the lifting speed reducer 16, the fixed shaft 17, the two sets of flat push gear assemblies 18, the two sets of gear rack assemblies 19 and the sprocket assembly 20, it is convenient to realize the sliding out or retracting of the two connecting plates 9 from the inner wall plates 7. The specific process is as follows: when the lifting speed reducer 16 works and rotates, the fixed shaft 17 is driven to rotate through the sprocket assembly 20. At this time, the two sets of flat push gear assemblies 18 fixedly connected with the fixed shaft 17 will rotate synchronously, and drive the two connecting plates 9 to slide along the channel direction of the guide rail assembly through the meshing between the gear and the rack; Combined with the arrangement of the sprocket guard assembly 21, it can prevent flying dust or impurities from entering, ensure the working effect of the sprocket assembly 20 and improve the service life.

[0035] In the present invention, preferably, as Figure 1 , Figure 2 and Figure 3 shown, two support frames 22 are also detachably installed on the outer wall plate 1 far away from the rotary reduction motor 8. The winding shaft A2 and the winding shaft B3 are respectively placed on the two support frames 22.

[0036] In this embodiment, through the arrangement of the two support frames 22, it is convenient to temporarily fix the winding shaft A2 and the winding shaft B3, improve the structural strength during winding and unwinding, and further improve the safety.

[0037] The present invention also provides an operation method of a double-shaft fixed automatic winding and unwinding mechanism, as Figures 1 to 9 shown, including the following steps: S1. For the first time, manually lead the pole piece 5 through the cutter assembly and the pressure roller assembly in sequence, and manually fix the pole piece 5 on the reel 6 of the winding shaft A2 or the reel 6 of the winding shaft B3, and press the operation button to perform winding or unwinding; S2. Before the winding and unwinding reaches near the target reel diameter value, the rotation deceleration motor 8 operates. The two inner wall plates 7, the pressure roller assembly, and the blade assembly rotate counterclockwise to the take-up reel B3 or clockwise to the take-up reel A2 under the drive of the rotation deceleration motor 8. S3. Under the action of the lifting mechanism, the two connecting plates 9 slide out of the bottom of the inner wall plate 7 along the length direction of the inner wall plate 7, and the take-up reel B3 or the take-up reel A2 is controlled by the motor 4 to rotate, so that its rotation speed is consistent with that of the pressure roller assembly. S4. The air cylinder extends to make the pressure roller assembly slide out of the bottom of the connecting plate 9 and contact the take-up reel B3 or the take-up reel A2, and the pole piece 5 is attached to the double-sided tape pre-pasted on the reel 6, so that the pole piece 5 is connected to the take-up reel B3 or the take-up reel A2. S5. Shortly after the pressure roller assembly contacts the take-up reel B3 or the take-up reel A2, the corresponding air cylinder extends to quickly extend the blade assembly, cut the pole piece 5, and the take-up reel A2 or the take-up reel B3 starts to quickly decelerate to 0. During this period, the tail material is slowly collected and completed. S6. The blade assembly, the pressure roller assembly, and the two connecting plates 9 are reset through the air cylinder and the lifting mechanism to ensure that the connecting plate 9 retracts into the inner wall plate 7, and then the two inner wall plates 7 are returned to the vertical direction by the rotation deceleration motor 8.

[0038] In this embodiment, through the rotation deceleration motor 8 and the arrangement of the two inner wall plates 7 between the take-up reel A2 and the take-up reel B3, the cutting mechanism can be closer to the take-up reel A2 and the take-up reel B3, and there is no need for the turret to drive the coil to rotate. The middle main shaft part and the driving part of the turret can be removed, making the structure more compact, with low cost and reduced energy consumption. At the same time, since the coil does not need to rotate left and right during switching, the risk of the coil dropping is reduced, and the safety is improved. In addition, compared with the 180-degree rotation in the existing structure, the cutting mechanism of this application only needs to rotate about 33 degrees to complete the coil changing action, reducing the coil changing time and improving the efficiency.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0040] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A dual-axis fixed automatic winding and unwinding mechanism, comprising two spaced-apart exterior wall panels (1), a winding shaft A (2), a winding shaft B (3) and a cutting mechanism, wherein the winding shaft A (2) and the winding shaft B (3) are both rotatably mounted between the two exterior wall panels (1) by means of a motor (4), a reel (6) for winding up a pole piece (5) is detachably mounted on the winding shaft A (2) and the winding shaft B (3), and the cutting mechanism is mounted between the winding shaft A (2) and the winding shaft B (3), wherein: The cutting mechanism comprises two vertically arranged inner wall panels (7), a rotating reduction motor (8), a pressure roller assembly and a blade assembly. The two inner wall panels (7) are rotationally connected to the two outer wall panels (1) via a crossbeam assembly and swing towards a reeling shaft A (2) or a reeling shaft B (3) under the drive of the rotating reduction motor (8). Connecting plates (9) are installed on the two inner wall panels (7). The two connecting plates (9) are slidably connected to the inner wall panels (7) via a lifting mechanism. Under the action of the lifting mechanism, the two connecting plates (9) slide out of or retract the bottom of the inner wall panels (7) along the length direction of the inner wall panels (7). The pressure roller assembly and the blade assembly are both slidably connected to the two connecting plates (9) via a cylinder, and the blade assembly is located above the pressure roller assembly. When the pole piece (5) wound on the pressure roller assembly slides out of the connecting plate (9) and is connected to the reel (6) under the action of the cylinder, the blade assembly moves in a direction close to the pole piece (5) under the action of the cylinder and cuts off the pole piece (5).

2. A dual-axis fixed automatic rewinding and unwinding mechanism according to claim 1, characterized in that: The pressure roller assembly comprises a pressure roller A (10), a pressure roller B (11) and a slider. The pressure roller A (10) and the pressure roller B (11) are symmetrically mounted on one end of the connecting plate (9) close to the bottom. Slide blocks are rotatably mounted on both ends of the pressure roller A (10) and the pressure roller B (11). The slide blocks are slidably connected to the connecting plate (9) via a cylinder. The blade assembly comprises a blade A (12), a blade B (13) and a slider. Both ends of the blade A (12) and the blade B (13) are slidably connected to the connecting plate (9) via the slider. The pole piece (5) is respectively located above the pressure roller A (10) and the pressure roller B (11), and the pole piece (5) passes through the blade A (12) and the blade B (13) and between the pressure roller A (10) and the pressure roller B (11) in sequence to be connected to the reel (6). The blade A (12) slides out of the connecting plate (9) under the action of the cylinder and cuts off the pole piece (5) between the pressure roller A (10) and the winding shaft A (2), or the blade B (13) slides out of the connecting plate (9) under the action of the cylinder and cuts off the pole piece (5) between the pressure roller B (11) and the winding shaft B (3).

3. A dual-axis fixed automatic rewinding and unwinding mechanism according to claim 2, characterized in that: A roller assembly (14) is rotatably mounted between the two inner wall panels (7), and an adjustment roller assembly (15) is rotatably mounted between the two connecting plates (9). The adjustment roller assembly (15) is located between the roller assembly (14) and the blade assembly. After the pole piece (5) passes around the roller assembly (14) and the adjustment roller assembly (15), it passes through between the blade A (12) and the blade B (13) and the pressure roller A (10) and the pressure roller B (11) in sequence to be connected to the reel (6).

4. A dual-axis fixed automatic rewinding and unwinding mechanism according to claim 3, characterized in that: Before the reel (6) on the reel B (3) approaches the target value, the cutter mechanism is driven by the rotary reduction motor (8) to swing toward the reel A (2), and the pressure roller B (11) is aligned with the midpoint of the reel A (2). Conversely, before the reel (6) on the reel A (2) approaches the target value, the cutter mechanism is driven by the rotary reduction motor (8) to swing toward the reel B (3), and the pressure roller A (10) is aligned with the midpoint of the reel B (3).

5. A dual-shaft fixed automatic rewinding and unwinding mechanism according to claim 4, characterized in that: The reel (6) is bonded with double-sided adhesive tape, and the pole piece (5) is fixedly connected to the double-sided adhesive tape under the action of the pressure roller B (11) or the pressure roller A (10).

6. A dual-shaft fixed automatic rewinding and unwinding mechanism according to any one of claims 1 to 5, characterized in that: The lifting mechanism comprises two sets of guide rail assemblies, a lifting reducer (16), a fixed shaft (17), two sets of horizontal push gear assemblies (18), two sets of gear rack assemblies (19) and a sprocket assembly (20). The two connecting plates (9) are respectively slidably connected to the two inner wall panels (7) through the two sets of guide rail assemblies. The lifting reducer (16) is fixedly installed between the two inner wall panels (7). The fixed shaft (17) is rotatably installed between the two inner wall panels (7) and is located below the lifting reducer (16). The two sets of horizontal push gear assemblies (18) are fixedly sleeved on the fixed shaft (17). The two sets of gear rack assemblies (19) are respectively fixedly connected to the two connecting plates (9). The horizontal push gear assemblies (18) and the gear rack assemblies (19) correspond to each other one by one and mesh with each other. The output shaft of the lifting reducer (16) is connected to the fixed shaft (17) through the sprocket assembly (20) and drives the fixed shaft (17) to rotate.

7. A dual-shaft fixed automatic rewinding and unwinding mechanism according to claim 6, characterized in that: A sprocket guard assembly (21) is mounted on the sprocket assembly (20).

8. The dual-axis fixed automatic rewinding and unwinding mechanism according to claim 1, characterized in that: Two support frames (22) can also be detachably mounted on the outer wall panel (1) away from the rotary reduction motor (8), and the winding shaft A (2) and the winding shaft B (3) are respectively placed on the two support frames (22).

9. An operating method of a dual-shaft fixed automatic rewinding and unwinding mechanism as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. For the first time, the electrode piece (5) is passed through the cutter assembly and the pressure roller assembly in sequence by using an artificial guide, and the electrode piece (5) is manually fixed on the reel (6) of the reel A (2) or the reel (6) of the reel B (3), and an operation button is pressed to collect or release; S2, before the reel reaches a target reel diameter value, the rotary reduction motor (8) operates, and the two inner wall panels (7), the pressure roller assembly and the blade assembly are driven by the rotary reduction motor (8) to rotate counterclockwise to the reel shaft B (3) or clockwise to the reel shaft A (2); S3. Under the action of the lifting mechanism, the two connecting plates (9) slide out of the bottom of the inner wall plate (7) along the length direction of the inner wall plate (7), and the motor (4) controls the winding shaft B (3) or the winding shaft A (2) to rotate so that its rotation speed is consistent with the rotation speed of the pressure roller assembly; S4, the pressure roller assembly is extended by the cylinder to slide out of the bottom of the connecting plate (9) and contact the reel B (3) or the reel A (2), and the pole piece (5) is attached to the double-sided adhesive pre-attached on the reel (6), so that the pole piece (5) is connected to the reel B (3) or the reel A (2); S5, after a short time when the pressure roller assembly contacts the reel B (3) or the reel A (2), the blade assembly is extended quickly by the corresponding cylinder to cut off the pole piece (5), and the reel A (2) or the reel B (3) begins to decelerate rapidly to 0, during which the tailings are slowly collected; S6. The blade assembly, the pressure roller assembly and the two connecting plates (9) are reset by means of the cylinder and the lifting mechanism to ensure that the connecting plates (9) are retracted into the inner wall plate (7). Then, the two inner wall plates (7) are returned to the vertical direction by rotating the reduction motor (8).

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