Pole piece slitting mechanism
By designing a pole-piece slitting mechanism including the first and second cutting shafts, the sliding and position adjustment of the first cutting tool is achieved by using elastic members and active driving members, the problem of poor cutting quality of single-edge structure and easy-to-band breakage of double-edge structure is solved, and a longer tool life and higher production efficiency are achieved.
Patent Information
- Application Number
- CN202421859637.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-08-02
AI Technical Summary
In the prior art, the cutting quality of the pole-piece slitting mechanism with a single-edge structure is poor, the tool edge wears fast, and the lifespan is low; while the double-edge structure is prone to breaking the belt and affecting production efficiency.
A pole-piece slicing mechanism is designed, including a first cutting shaft and a second cutting shaft. The first cutting blade is placed in the middle position of the two second cutting blades. The sliding and position adjustment of the first cutting blade is achieved by using the elastic member and the active driving member, and the cutting position is automatically adjusted according to whether there is tape.
When there is no tape, the tool life and cutting quality are guaranteed; when there is tape, the tape can be cut off without causing tape breakage, reducing shutdown failures and improving production efficiency.
Smart Images
Figure CN222844203U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pole piece cutting equipment, in particular to a pole piece cutting mechanism. Background Art
[0002] The commonly used slitting mechanisms are as follows Figure 1 , Figure 2 As shown, one motor controls the upper knife shaft and the upper knife to rotate, and another motor controls the lower knife shaft and the lower knife to rotate. The pole piece is placed between the upper knife and the lower knife. Under the shearing action of the upper knife and the lower knife, the pole piece is sheared continuously.
[0003] in Figure 1 The double-edged structure is shown, that is, there are 2 lower cutting knives and 1 upper cutting knife, the distance between the 2 lower cutting knives is T, the upper cutting knife is placed between the 2 lower cutting knives, and the distances between the upper cutting knife and the two lower cutting knives are t1 and t2 respectively, then t1=t2=0.5*T;
[0004] Figure 2 The structure shown is a single blade structure, that is, there is only one upper slitting knife and one lower slitting knife, and the gap between the upper and lower slitting knives is very small or there is no gap, that is, the gap t≈0mm;
[0005] At present, the cross-section quality cut out by the single-edge structure is poor and the tool edge wears quickly, resulting in a shorter tool life. The double-edge structure is prone to cause the pole piece to break (when there is tape in the incoming material). Utility Model Content
[0006] The utility model aims to provide a pole piece cutting mechanism. When the incoming material does not have adhesive tape, the first cutting knife is placed in the middle of two second cutting knives, thereby ensuring the tool life and cutting quality. When the incoming material has adhesive tape, the first cutting knife slides and approaches one of the second cutting knives, thereby cutting the adhesive tape without causing tape breakage, thereby reducing downtime failures and improving production efficiency.
[0007] The above technical objectives of the utility model are achieved through the following technical solutions:
[0008] A pole piece cutting mechanism comprises a base, a first knife shaft and a second knife shaft are connected to the base, and the pole piece passes through between the first knife shaft and the second knife shaft for cutting, and is characterized in that:
[0009] A first cutting assembly, an elastic member and an active driving member are provided on the first knife shaft. The first cutting assembly is slidably connected to the first knife shaft. The first cutting assembly includes a first cutting knife. Two second cutting knives arranged at intervals are provided on the second knife shaft. The elastic member pushes the first cutting knife to move along the first knife shaft to a middle position between the two second cutting knives / close to one of the second cutting knives. The active driving member pushes the first cutting knife to overcome the force of the elastic member and move to a middle position close to one of the second cutting knives / the two second cutting knives.
[0010] Furthermore, both ends of the first cutter shaft are provided with a stepped shaft toward the inner circumference, and a first fixed spacer is sleeved on the stepped shaft and threadedly connected with a first locking nut, the first locking nut abuts against the outer end of the corresponding first fixed spacer, and the first fixed spacer abuts against the step surface of the first cutter shaft, and the elastic part and the active driving part are located between the corresponding first fixed spacer and the first cutting assembly.
[0011] Furthermore, the elastic member includes a disc spring sleeved on the first knife shaft.
[0012] Furthermore, the active driving component includes an air expansion shaft sleeved on the first knife shaft.
[0013] Furthermore, a ring is connected to the inner end of the first fixed spacer, and the elastic member and the active driving member are located on the inner side of the corresponding ring. The elastic member and the active driving member push the first cutting assembly to move until it abuts against the end of the ring of the corresponding first fixed spacer.
[0014] Furthermore, the second knife shaft is also provided with two second spacers and a gasket, the gasket is located between the two second cutting knives, the inner end of the second spacer abuts against the outer side of the corresponding second cutting knife, and the second knife shaft is also provided with two second limiting members, and the second limiting members are limited at the outer end of the corresponding second spacer.
[0015] Furthermore, the second limiting member includes a second locking nut threadedly connected to the second knife shaft, and the second locking nut abuts against the outer end of the corresponding second spacer sleeve.
[0016] Furthermore, the first cutting assembly also includes two first cutting separation sleeves, one of which has a step shaft opened toward its inner circumference from its inner end, the first cutting knife sleeve is arranged on its step shaft, and the step shaft is also sleeved with a tensioning spring that pushes the first cutting knife to abut against the inner end of the other first cutting separation sleeve.
[0017] Furthermore, it also includes a color code sensor for detecting whether there is tape on the incoming electrode material before slitting. When it is detected that there is no tape, the first cutting knife moves to the middle position between the two second cutting knives. When it is detected that there is tape, the first cutting knife moves to a position close to one of the second cutting knives.
[0018] Furthermore, the base is also connected to a rotary drive component, and the rotary drive component drives the first knife shaft and the second knife shaft to rotate.
[0019] In summary, the utility model has the following beneficial effects:
[0020] When the incoming material does not have tape, the first cutting knife is placed in the middle of the two second cutting knives to ensure the tool life and cutting quality;
[0021] When the incoming material contains adhesive tape, the first slitting knife slides and approaches one of the second slitting knives, which can cut the adhesive tape without causing tape breakage, thereby reducing downtime failures and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of a slitting mechanism with a double-edged structure in the prior art;
[0023] Figure 2 It is a schematic diagram of a slitting mechanism with a single blade structure in the prior art;
[0024] Figure 3 This is a schematic diagram of the overall structure of a pole piece cutting mechanism of the utility model;
[0025] Figure 4 This is a cross-sectional structural diagram of a pole piece cutting mechanism of the utility model.
[0026] Figure 5 yes Figure 4 Part A is an enlarged schematic diagram of the structure when the incoming material has tape;
[0027] Figure 6 yes Figure 4 Part A is an enlarged schematic diagram of the structure of the incoming material without tape.
[0028] In the figure, 1, base; 2, first knife shaft; 21, first slitting assembly; 211, first slitting knife; 212, first slitting sleeve; 213, tension spring; 22, disc spring; 23, air shaft; 24, first fixed sleeve; 25, first locking nut; 3, second knife shaft; 31, second slitting knife; 32, second sleeve; 33, washer; 34, second locking nut; 4, color mark sensor; 5, motor; 51, coupling; 52, bearing seat. DETAILED DESCRIPTION
[0029] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation of the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0030] A pole piece cutting mechanism, such as Figure 3 and Figure 4 As shown, it includes a base 1, and a first blade shaft 2 (upper slitting blade shaft) and a second blade shaft 3 (lower slitting blade shaft) are connected to the base 1. The pole piece passes between the first blade shaft 2 and the second blade shaft 3 to perform slitting. The base 1 is also connected to a rotating driving member, which drives the first blade shaft 2 and the second blade shaft 3 to rotate; the rotating driving member includes a motor 5, and the motor 5 is provided with one or two, which synchronously drives or separately drives the first blade shaft 2 and the second blade shaft 3 to rotate;
[0031] In this embodiment, the rotating drive component also includes two vertical bearing seats 52 fixed on the base 1, and each bearing seat 52 is connected to two upper and lower bearings, so that the ends of the first blade shaft 2 and the second blade shaft 3 are rotatably connected therein, and the ends of the first blade shaft 2 and the second blade shaft 3 are respectively rotatably connected between the two bearing seats 52. Two motors 5 are provided, and the output ends are respectively connected to the couplings 51, and the other ends of the couplings 51 are respectively connected to the corresponding first blade shaft 2 or the second blade shaft 3.
[0032] like Figure 4 As shown, the first blade shaft 2 is provided with a first cutting assembly 21, an elastic member and an active driving member, the first cutting assembly 21 is slidably connected to the first blade shaft 2, the first cutting assembly 21 includes a first cutting knife 211, and the second blade shaft 3 is provided with two second cutting knives 31 arranged at intervals, the elastic member pushes the first cutting knife 211 to move along the first blade shaft 2 to the middle position of the two second cutting knives 31 / close to one of the second cutting knives 31, and the active driving member pushes the first cutting knife 211 to overcome the action of the elastic member and move to the middle position close to one of the second cutting knives 31 / the two second cutting knives 31;
[0033] The pole piece is placed between the first cutting knife 211 and the second cutting knife 31. The speed of the first cutting knife 211 and the second cutting knife 31 at the cutting point of the pole piece is V 切 , then V 切 The tape travel speed is roughly equal to that of the pole piece, and the two are in the same direction;
[0034] The slitting mechanism can also be provided with a color mark sensor 4 for detecting whether there is tape on the incoming electrode material before slitting for automatic detection, which can also be replaced by other sensing devices; when it is detected that there is no tape, the first slitting knife 211 moves to the middle position between the two second slitting knives 31, and when it is detected that there is tape, the first slitting knife 211 moves to a position close to one of the second slitting knives 31.
[0035] like Figure 5 and Figure 6As shown, in this embodiment, the elastic member includes a disc spring 22 sleeved on the first blade shaft 2. When the incoming material contains adhesive tape, the active driving member does not work (the air pressure in the air expansion sleeve is slowly reduced through the proportional valve), and the disc spring 22 pushes the first cutting knife 211 to move to a position close to one of the second cutting knives 31 (the first cutting knife 211 cuts the blade downward at an angle on the right side, then it moves to the left, close to and in contact with the second cutting knife 31 on the left side), and the lateral distances between the cutting edge (blade) of the first cutting knife 211 and the two second cutting knives 31 are t1 and t2 respectively. At this time, t1≈0, t2≈T, and the error allowable range can be set to t1 between 0 and 0.1T, and t2 between T and 0.9T;
[0036] The active driving part includes an air expansion shaft 23 which is sleeved on the first blade shaft 2. An air channel is opened in the middle of the first blade shaft 2, and the end of the air channel is connected to the outer peripheral direction to inflate or deflate the air expansion shaft 23. When there is no tape in the incoming material, the air pressure in the air expansion sleeve is controlled to be P through a proportional valve. At this time, the air in the air expansion sleeve becomes larger and pushes the first cutting knife 211 (first cutting component 21) to overcome the force of the disc spring 22 and move to the middle position of the two second cutting knives 31, so that t1=t2=0.5*T at this time. The allowable error range of t1 and t2 can also be set to be between 0.4*T and 0.6*T.
[0037] like Figure 4 As shown, specifically, both ends of the first cutter shaft 2 are provided with stepped shafts toward the inner circumference, and a first fixed spacer 24 is sleeved on the stepped shaft, and a first locking nut 25 is threadedly connected, and the first locking nut 25 abuts against the outer end of the corresponding first fixed spacer 24, and the first fixed spacer 24 abuts against the stepped surface of the first cutter shaft 2, and the disc spring 22 and the gas expansion shaft 23 are located between the corresponding first fixed spacer 24 and the first cutting assembly 21;
[0038] The inner end of the first fixed spacer 24 is also integrally connected with a ring (that is, a circular groove is cut on the inner circumference, leaving an outer ring), and the disc spring 22 and the gas expansion shaft 23 are located on the inner side of the corresponding ring. The disc spring 22 or the gas expansion shaft 23 pushes the first cutting component 21 to move until it abuts against the end of the ring corresponding to the first fixed spacer 24. For example, in this embodiment, the disc spring 22 is located on the right side of the first cutting component 21. When the incoming material contains tape, the disc spring 22 pushes the first cutting component 21 to move left until the first cutting component 21 abuts against the end of the ring at the right end of the first fixed spacer 24 on the left.
[0039] like Figure 4 and Figure 5As shown, the first cutting assembly 21 also includes two sets of first cutting separation sleeves 212 arranged outside the first knife shaft 2, one of the first cutting separation sleeves 212 has a stepped shaft machined out of the inner end periphery, the first cutting knife 211 is sleeved on its stepped shaft, and the stepped shaft is also sleeved with an annular tensioning spring 213 that pushes the first cutting knife 211 to abut against the inner end of the other first cutting separation sleeve 212.
[0040] like Figure 4 As shown, two second spacers 32 and a washer 33 are also sleeved on the second knife shaft 3, and the washer 33 is located between the two second slitting knives 31, so that a gap is formed between the two second slitting knives 31; the inner end of the second spacer 32 abuts against the outer side of the corresponding second slitting knife, and the second knife shaft 3 is also provided with two second limiting members, and the second limiting members are limited at the outer end of the corresponding second spacer 32;
[0041] The second limit member includes an outer ring integrally connected to the second cutter shaft 3 and a second locking nut 34 threadedly connected to the second cutter shaft 3, the outer ring abuts against the outer end of the corresponding second spacer 32, and the second locking nut 34 is locked and abuts against the outer end of another second spacer 32.
[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.
Claims
1. A pole piece cutting mechanism, comprising a base, a first knife shaft and a second knife shaft are connected to the base, and the pole piece passes through the first knife shaft and the second knife shaft for cutting, characterized in that: A first cutting assembly, an elastic member and an active driving member are provided on the first knife shaft. The first cutting assembly is slidably connected to the first knife shaft. The first cutting assembly includes a first cutting knife. Two second cutting knives arranged at intervals are provided on the second knife shaft. The elastic member pushes the first cutting knife to move along the first knife shaft to a middle position between the two second cutting knives / close to one of the second cutting knives. The active driving member pushes the first cutting knife to overcome the force of the elastic member and move to a middle position close to one of the second cutting knives / the two second cutting knives.
2. A pole piece cutting mechanism according to claim 1, characterized in that: Both ends of the first cutter shaft are provided with a stepped shaft toward the inner circumference, and a first fixed spacer is sleeved on the stepped shaft and threadedly connected with a first locking nut, the first locking nut abuts against the outer end of the corresponding first fixed spacer, and the first fixed spacer abuts against the step surface of the first cutter shaft, and the elastic part and the active driving part are located between the corresponding first fixed spacer and the first cutting component.
3. A pole piece cutting mechanism according to claim 1 or 2, characterized in that: The elastic member comprises a disc spring sleeved on the first knife shaft.
4. A pole piece cutting mechanism according to claim 1 or 2, characterized in that: The active driving component comprises an air expansion shaft sleeved on the first knife shaft.
5. The pole piece cutting mechanism according to claim 2, characterized in that: The inner end of the first fixed spacer is connected with a ring, the elastic member and the active driving member are located inside the corresponding ring, and the elastic member and the active driving member push the first cutting assembly to move until it abuts against the end of the ring of the corresponding first fixed spacer.
6. The pole piece cutting mechanism according to claim 1, characterized in that: The second knife shaft is also provided with two second spacers and a gasket, the gasket is located between the two second cutting knives, the inner end of the second spacer abuts against the outer side of the corresponding second cutting knife, and the second knife shaft is also provided with two second limiting members, and the second limiting members are limited at the outer end of the corresponding second spacer.
7. A pole piece cutting mechanism according to claim 6, characterized in that: The second limiting member includes a second locking nut threadedly connected to the second knife shaft, and the second locking nut abuts against the outer end of the corresponding second spacer.
8. A pole piece cutting mechanism according to claim 1 or 2, characterized in that: The first cutting assembly also includes two first cutting separation sleeves, one of which has a stepped shaft at its inner end toward its inner circumference, and a first cutting knife sleeve is arranged on its stepped shaft, which is also sleeved with a tensioning spring for pushing the first cutting knife to abut against the inner end of the other first cutting separation sleeve.
9. The pole piece cutting mechanism according to claim 1, characterized in that: It also includes a color mark sensor for detecting whether there is tape on the incoming electrode material before slitting. When it is detected that there is no tape, the first cutting knife moves to the middle position between the two second cutting knives. When it is detected that there is tape, the first cutting knife moves to a position close to one of the second cutting knives.
10. The pole piece cutting mechanism according to claim 1, characterized in that: The base is also connected with a rotary drive member, which drives the first knife shaft and the second knife shaft to rotate.