Current collector slitting and rewinding equipment

Abstract

The invention relates to the technical field of current collector slitting and rewinding, and discloses current collector slitting and rewinding equipment which comprises a rack, an unwinding mechanism, a convex point burr treatment mechanism and a slitting and rewinding mechanism, the convex point burr treatment mechanism comprises a first guide assembly, a back roller and a comma scraper assembly, and a scraper edge of the comma scraper assembly faces the back roller; and the comma scraper assembly is used for scraping convex points and burrs on the surface of the current collector. According to the current collector slitting and rewinding equipment, the anti-wrinkling design and the salient point burr special processing function are integrated, on one hand, the problem that a wide current collector is prone to wrinkling is effectively solved, the flatness of the current collector in the advancing and slitting process is guaranteed, and the quality defects such as size deviation and interlayer scratching caused by wrinkling are avoided; on the other hand, salient points and edge burrs on the surface of the current collector can be removed, abrasion to slitting components is reduced, the equipment maintenance frequency and the production cost are reduced, and meanwhile the surface quality and the qualified rate of the finished current collector are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of current collector slitting and rewinding, and particularly relates to a current collector slitting and rewinding device. BACKGROUND

[0002] As a core basic component of lithium batteries, the processing precision of the current collector (such as copper foil and aluminum foil) directly affects the overall performance and safety stability of the lithium battery. In the actual production process, the coiled current collector material to be processed needs to be processed into a finished product coiled material meeting the subsequent production specifications through a slitting and rewinding device. Therefore, the processing quality and efficiency of the slitting and rewinding device are crucial to the current collector production link. The existing current collector slitting and rewinding device is usually equipped with only basic unwinding, slitting and rewinding mechanisms, and can realize the basic slitting and rewinding function of the current collector. However, in the long-term actual operation, it gradually exposes the technical defects that cannot meet the high-precision processing requirements. On the one hand, in the running process of the current collector from unwinding to slitting, the surface of the current collector is prone to irregular wrinkles due to factors such as the material's own ductility and tension fluctuation in the running path. Such wrinkles not only cause the slitting cutter to decrease in alignment accuracy in the subsequent slitting process, resulting in the size deviation of the slitted current collector exceeding the allowable range, but also form interlayer wrinkle superposition in the rewinding process, thereby causing quality problems such as the looseness of the finished product coiled material and interlayer scratches. On the other hand, during the preparation, transportation or storage of the current collector, metal scraps, dust and other materials are easily attached to the surface of the current collector to form protrusions, or burrs are generated due to irregular edge cutting. These protrusions and burrs, if entering the slitting process with the current collector, not only intensify the wear of the slitting cutter, shorten the cutter replacement cycle and increase the production cost, but also cause defects such as burrs and notches on the edge of the slitted current collector, further reducing the finished product yield. The above problems of wrinkles being difficult to suppress and protrusions and burrs being difficult to remove are more pronounced when processing wide-width current collectors. Since the wide-width current collector has a larger stress area and the tension is more difficult to control uniformly during the running process, the probability and degree of wrinkle generation are greater, and the distribution range of the protrusions and burrs on the surface of the wide-width current collector is wider. If not handled in time, the influence on the overall processing quality is more serious. SUMMARY

[0003] The present application aims to improve at least one technical problem in the background art.

[0004] The present application provides a current collector slitting and rewinding device, comprising: a rack; an unwinding mechanism, the unwinding mechanism comprising an unwinding roller, the unwinding roller being arranged on the rack and being used to carry a current collector material to be processed; The convex point burr processing mechanism is located downstream of the unwinding mechanism, and comprises a first guide assembly, a back roller and a comma doctor blade assembly. The slitting and rewinding mechanism is located downstream of the convex point burr processing mechanism, and comprises a cutter assembly and a rewinding assembly.

[0005] The present application has the following advantages: by integrating the anti-wrinkle design and the convex point burr special processing function in the current collector slitting and rewinding equipment, the present application can effectively suppress the wrinkles that are prone to occur in the wide current collector, ensure the flatness of the current collector during the running and slitting process, avoid the size deviation and interlayer scratches caused by wrinkles, and remove the convex points and edge burrs on the surface of the current collector, thereby reducing the wear of the slitting components, reducing the equipment maintenance frequency and production cost, and improving the surface quality and the qualification rate of the finished current collector.

[0006] As a further improvement of the above technical solution, the comma doctor blade assembly comprises an inner shaft, an outer cylinder and a plurality of adjusting bolts, both ends of the inner shaft are arranged on the movable part of the first linear motion assembly, the outer cylinder is movably sleeved on the inner shaft, a first doctor blade opening is formed on the outer wall of the outer cylinder, the first doctor blade opening extends along the axial direction of the outer cylinder, the first doctor blade opening faces the back roller, a plurality of first through holes are formed on the side of the outer cylinder away from the first doctor blade opening and spaced apart along the axial direction of the outer cylinder, a plurality of threaded holes are formed on the outer wall of the inner shaft and spaced apart along the axial direction of the inner shaft, and the adjusting bolts are threadedly connected through the first through holes and the corresponding threaded holes.

[0007] As a further improvement of the above technical solution, a second doctor blade opening is also formed on the outer wall of the outer cylinder, the second doctor blade opening extends along the axial direction of the outer cylinder, the first doctor blade opening and the second doctor opening are respectively located on the two sides of the outer cylinder in the radial direction, and a plurality of second through holes are formed on the side of the outer cylinder away from the second doctor blade opening and spaced apart along the axial direction of the outer cylinder.

[0008] As a further improvement of the above technical solution, a first insert nut is arranged on the first through hole, and the adjusting bolt is threadedly connected with the corresponding threaded hole through the first insert nut.

[0009] As a further improvement of the above technical solution, the convex point burr processing mechanism further comprises a feeding roller arranged on the rack, the feeding roller being located on the side of the back roller away from the first guide assembly, and the roller surface of the feeding roller is provided with a plurality of annular grooves spaced apart along the axial direction thereof.

[0010] As a further improvement of the above technical solution, the convex point burr processing mechanism further comprises a first linear motion assembly, the first linear motion assembly comprising a first cylinder, a first sliding block and a first guide rail, the cylinder body of the first cylinder being fixedly arranged on the rack, the first guide rail being fixedly arranged on the rack and extending in a direction perpendicular to the axis of the back roller, the first sliding block being movably arranged on the first guide rail, the first sliding block being connected with the output end of the first cylinder, the first cylinder driving the first sliding block to move along the first guide rail, and a scraper seat being arranged on the first sliding block, the inner shaft being arranged on the scraper seat.

[0011] As a further improvement of the above technical solution, the convex point burr processing mechanism further comprises a second linear motion assembly, the second linear motion assembly comprising an adjusting hand wheel, a second sliding block, a second guide rail and a second screw rod, the second guide rail being fixedly arranged on the rack, the second guide rail extending in a second direction, the second direction intersecting the extending direction of the first guide rail, the second screw rod being rotatably arranged on the second guide rail, the extending direction of the second screw rod being consistent with the extending direction of the second guide rail, the adjusting hand wheel being fixedly arranged at one end of the second screw rod, the second sliding block being slidably arranged on the second guide rail, the second sliding block being provided with a second nut, and the second screw rod cooperating with the second nut to drive the second sliding block to move along the second guide rail; when the first sliding block is driven by the first cylinder to move along the first guide rail to the working position in the direction close to the back roller, the second sliding block can move along the second guide rail to abut against the first sliding block.

[0012] As a further improvement of the above technical solution, the slitting and rewinding mechanism further comprises a second guide assembly, the second guide assembly comprising a first guide roller, a second guide roller, a third guide roller, a fourth guide roller and a fifth guide roller arranged in sequence on the rack along the direction of the current collector, the roller surface of the first guide roller being provided with a plurality of annular grooves spaced apart along the axial direction thereof, the cutter assembly being located above the fifth guide roller, and the cutter assembly comprising a plurality of cutters arranged along the axial direction of the fifth guide roller.

[0013] As a further improvement of the above technical solution, the winding assembly comprises an upper winding assembly and a lower winding assembly, the upper winding assembly is arranged on the side of the fifth guide roller away from the fourth guide roller, and the upper winding assembly comprises a plurality of upper winding rollers arranged coaxially and spaced along the axial direction; the lower winding assembly is arranged on the side of the fifth guide roller away from the fourth guide roller, and the lower winding assembly comprises a plurality of lower winding rollers arranged coaxially and spaced along the axial direction, and the upper winding rollers and the lower winding rollers are staggered along the axial direction.

[0014] As a further improvement of the above technical solution, the upper winding assembly further comprises a sixth guide roller, a seventh guide roller and an eighth guide roller arranged in sequence between the fifth guide roller and the upper winding roller along the advancing direction of the current collector, a plurality of annular grooves are arranged on the roller surface of the eighth guide roller and spaced along the axial direction thereof; the lower winding assembly further comprises a ninth guide roller, a tenth guide roller and an eleventh guide roller arranged in sequence between the fifth guide roller and the lower winding roller along the advancing direction of the current collector, a plurality of annular grooves are arranged on the roller surface of the eleventh guide roller and spaced along the axial direction thereof.

[0015] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the description of the embodiments, taken in conjunction with the following drawings in which: Figure 1 Structure schematic view of the current collector slitting and rewinding equipment of an embodiment; Figure 2 Structure schematic view of the protrusion burr processing mechanism of an embodiment; Figure 3 Structure schematic view of the protrusion burr processing mechanism of an embodiment; Figure 4 Structure schematic view of the first linear motion assembly and the second linear motion assembly of an embodiment; Figure 5 Structure schematic view of the comma doctor blade assembly of an embodiment; Figure 6 Structure schematic view of the slitting and rewinding mechanism of an embodiment; Figure 7 Structure schematic view of the slitting and rewinding mechanism of an embodiment; Figure 8 Structure view of the upper winding assembly and the lower winding assembly of an embodiment; Figure 9 Structure view of the upper winding assembly and the lower winding assembly of an embodiment; Figure 8 Enlarged view of A in FIG. 8; Figure 10A structural schematic view of a fourth linear motion assembly of an embodiment; Figure 11 A structural schematic view of a third linear motion assembly of an embodiment.

[0017] In the drawings: 100 - frame; 200 - unwinding mechanism; 300 - burr processing mechanism; 400 - slitting and rewinding mechanism; a100 - unwinding roller seat; b201 - first guide guide roller; b202 - second guide guide roller; b203 - third guide guide roller; b204 - fourth guide guide roller; b300 - back roller; b401 - inner shaft; b402 - outer cylinder; b4021 - first scraper opening; b4022 - second scraper opening; b4023 - first insert nut; b4024 - second insert nut; b403 - adjusting bolt; b404 - annular cavity; b500 - feeding roller; b600 - first linear motion assembly; b601 - first air cylinder; b602 - first sliding block; b603 - first guide rail; b604 - scraper seat; b700 - second linear motion assembly; b701 - adjusting hand wheel; b702 - second sliding block; b703 - second guide rail; b704 - second lead screw; b800 - air knife assembly; b900 - dust collection assembly; c201 - first guide roller; c202 - second guide roller; c203 - third guide roller; c204 - fourth guide roller; c205 - fifth guide roller; c301 - cutter; c302 - cutter sliding rail; c303 - cutter sliding block; c401 - upper winding roller; c402 - sixth guide roller; c403 - seventh guide roller; c404 - eighth guide roller; c405 - first upper winding roller seat; c406 - second upper winding roller seat; c501 - lower winding roller; c502 - ninth guide roller; c503 - tenth guide roller; c504 - eleventh guide roller; c601 - third guide rail; c602 - third sliding block; c603 - third lead screw; c604 - third servo motor; c605 - transmission rod; c701 - adjusting hand wheel; c702 - fourth guide rail; c703 - fourth lead screw; c704 - fourth sliding block; c801 - fifth guide rail; c802 - fifth sliding block; c803 - hand wheel; c901 - upper compression roller guide rail; c902 - upper compression roller sliding block; c903 - upper compression roller air cylinder; c904 - upper compression roller swing arm; c905 - upper compression roller seat; c906 - upper winding compression roller; c907 - lower winding compression roller. DETAILED DESCRIPTION

[0018] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and are not to be understood as a limitation of the present application.

[0019] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In the description of the present application, unless otherwise explicitly defined, the words such as setting, mounting, connecting and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0021] The embodiments of the present application will be described below in conjunction with Figures 1 to 11 The embodiments of the present application will be described below in conjunction with

[0022] The embodiments of the present application provide a current collector slitting and rewinding equipment, comprising: a rack 100; a unwinding mechanism 200, the unwinding mechanism 200 comprises a unwinding roller, the unwinding roller is arranged on the rack 100, and the unwinding roller is used for bearing the current collector coiled material to be processed; a burr processing mechanism 300, the burr processing mechanism 300 is located downstream of the unwinding mechanism 200, the burr processing mechanism 300 comprises a first guide assembly, a back roller b300 and a comma doctor assembly, the first guide assembly comprises a plurality of guide guide rollers arranged in turn on the rack 100 along the current collector advancing direction, and at least the roll surface of the first guide guide roller and the last guide guide roller along the current collector advancing direction is spaced apart along the axial direction and is provided with a plurality of annular grooves; the back roller b300 is arranged on the rack 100, and the back roller b300 is located downstream of the guide assembly; the comma doctor assembly is arranged on the rack 100, the doctor blade of the comma doctor assembly faces the back roller b300, and the comma doctor assembly is used for scraping off the burrs on the surface of the current collector; a slitting and rewinding mechanism 400, the slitting and rewinding mechanism 400 is located downstream of the burr processing mechanism 300, the slitting and rewinding mechanism 400 comprises a cutter assembly and a rewinding assembly, the cutter assembly is used for slitting the current collector, and the rewinding assembly is used for rewinding the current collector after slitting.

[0023] The current collector slitting and rewinding equipment constructs an integrated processing system (especially suitable for wide current collector) which can realize stable conveying, wrinkle suppression, burr removal and slitting and rewinding of the current collector simultaneously through the unwinding mechanism 200, the burr processing mechanism 300 and the slitting and rewinding mechanism 400, so as to solve the problems of insufficient anti-wrinkle ability and lack of special burr processing structure of the existing equipment.

[0024] The unwinding mechanism 200 is used as a current collector roll material supply unit. The unwinding roller is installed at the upstream end of the rack 100 (in this embodiment, the unwinding roller is installed on the unwinding roller seat a100, which is arranged at the upstream end of the rack 100). The unwinding roller can stably carry the wound current collector roll material. During the operation of the equipment, the unwinding roller can be unwound at a constant speed according to the processing speed of the downstream process, so as to ensure that the current collector enters the subsequent processing link in a continuous and stable state.

[0025] The protrusion burr processing mechanism 300 is located downstream of the unwinding mechanism 200 and is a key unit for optimizing the surface quality of the current collector. The first guide assembly is composed of a plurality of guide rollers. The guide rollers are arranged in sequence along the direction of travel of the current collector and are fixed on the rack 100. The guide rollers guide the current collector to smoothly transition from the unwinding mechanism 200 to the subsequent back roller b300 and comma doctor blade assembly. The first guide assembly in this embodiment includes four guide rollers, which are sequentially referred to as the first guide roller b201, the second guide roller b202, the third guide roller b203, and the fourth guide roller b204 along the direction of travel of the current collector. In view of the characteristic that the wide current collector is prone to wrinkling, a plurality of annular grooves are arranged on the roller surface of the first guide roller (the first guide roller b201 in this embodiment) and the last guide roller (the fourth guide roller b204 in this embodiment) along the axial direction of the roller body. These annular grooves can form multi-point limiting and tension fine adjustment on the width of the wide current collector. When the wide current collector travels on the guide roller, the annular grooves can effectively disperse the local stress in the width of the current collector, avoid irregular wrinkles caused by uneven tension or edge deviation, and assist in maintaining the flatness of the width of the current collector, thereby solving the problem that the existing guide mechanism cannot suppress the wrinkles of the wide current collector due to the smooth roller surface. The back roller b300 is arranged downstream of the first guide assembly. The back roller b300 is parallel to the guide rollers and is rotatably installed on the rack 100. The back roller b300 can stably support the current collector that has passed through the guide assembly. When the current collector enters the protrusion burr removal link, the surface of the current collector forms uniform contact with the doctor blade edge of the subsequent comma doctor blade assembly. The comma doctor blade assembly is installed on the rack 100. The comma doctor blade assembly has the technical advantages of high straightness of the doctor blade edge and strong adhesion stability in the field of high-precision coating. The comma doctor blade assembly is innovatively applied to the scene of removing protrusion burrs of the current collector. The doctor blade edge of the comma doctor blade assembly faces the roller surface of the back roller b300, and the doctor blade edge is parallel to the axis of the back roller b300. When the current collector passes through the doctor blade edge at a constant speed under the support of the back roller b300, the comma doctor blade assembly can accurately remove the protrusions formed by metal debris and dust on the surface of the current collector and the burrs generated by edge cutting through the preset gap.

[0026] The slitting and rewinding mechanism 400 is located downstream of the protrusion burr processing mechanism 300, and is responsible for the standardization of the flow body and the winding function of the finished product. It is composed of a cutter assembly and a winding assembly. Among them, the cutter assembly is installed on the rack 100, and the cutter c301 can realize cutting along the width direction of the flow body, so as to cut the wide flow body into finished product rolls that meet the production needs. Because the surface defects have been removed and the wrinkles have been suppressed by the protrusion burr processing mechanism 300 in the early stage, the cutter c301 can always be in contact with the flat surface of the flow body, avoiding the deviation of the cutter c301 caused by wrinkles or protrusions, and the wear of the blade edge, thereby improving the cutting accuracy and the service life of the cutter c301. The winding assembly is also installed at the downstream end of the rack 100, and the flow body after slitting is wound into a regular finished product roll.

[0027] Further, the comma doctor assembly comprises an inner shaft b401, an outer cylinder b402 and a plurality of adjusting bolts b403, both ends of the inner shaft b401 are arranged on the movable part of the first linear motion assembly b600, the outer cylinder b402 is movably sleeved on the inner shaft b401, a first doctor port b4021 is formed on the outer wall of the outer cylinder b402, the first doctor port b4021 extends along the axial direction of the outer cylinder b402, the first doctor port b4021 faces the back roller b300, a plurality of first through holes are arranged on the side of the outer cylinder b402 away from the first doctor port b4021 and spaced apart along the axial direction of the outer cylinder b402, a plurality of threaded holes are arranged on the outer wall of the inner shaft b401 and spaced apart along the axial direction of the inner shaft b401, and the adjusting bolts b403 are threadedly connected through the first through holes and the corresponding threaded holes.

[0028] The inner shaft b401 in the comma doctor assembly of the embodiment serves as a fixed base, the outer cylinder b402 is movably sleeved on the inner shaft b401 to realize relative adjustment, and the first doctor port b4021 on the outer cylinder b402 is used for scraping the protrusion burr on the surface of the flow body. The plurality of first through holes arranged on the side of the outer cylinder b402 away from the first doctor port b4021 are matched with the threaded holes on the inner shaft b401 and the adjusting bolts b403 passing through the through holes to form a multi-point adjustment structure distributed along the axial direction. By tightening or loosening the adjusting bolts b403, the flatness of the easily bendable outer cylinder b402 (especially the wide outer cylinder b402 designed for wide flow bodies) can be corrected, so that the first doctor port b4021 and the back roller b300 arranged in parallel can maintain a relatively stable gap.

[0029] Further, a second scraping edge b4022 is formed on the outer wall of the outer cylinder b402, and extends along the axial direction of the outer cylinder b402. The first scraping edge b4021 and the second scraping edge b4022 are respectively located on the two sides of the radial direction of the outer cylinder b402. A plurality of second through holes are arranged on the side of the outer cylinder b402, which is opposite to the second scraping edge b4022 and is spaced apart along the axial direction of the outer cylinder b402.

[0030] In the embodiment, the second scraping edge b4022 and the first scraping edge b4021 are symmetrically distributed on the two sides along the radial direction of the outer cylinder b402. When the first scraping edge b4021 is worn out after long-term use or needs to be cleaned and maintained, the outer cylinder b402 does not need to be disassembled or stopped for a long time for maintenance. The outer cylinder b402 is only rotated around the inner shaft b401, so that the second scraping edge b4022 originally facing away from the back roller b300 faces the back roller b300, thereby quickly resuming operation and reducing downtime.

[0031] Further, a first insert nut b4023 is arranged on the first through hole, and the adjusting bolt b403 is threadedly connected with the corresponding threaded hole through the first insert nut b4023. A second insert nut b4024 is arranged on the second through hole.

[0032] The first insert nut b4023 and the second insert nut b4024 arranged at the first through hole and the second through hole respectively can enhance the structural strength of the through hole of the outer cylinder b402, avoid wear of the inner wall of the through hole when the adjusting bolt b403 is repeatedly screwed in and out, reduce the problem of thread failure or hole diameter increase of the outer cylinder b402 due to long-term use, and thereby improve the connection stability between the adjusting bolt b403 and the outer cylinder b402.

[0033] Further, the first insert nut b4023 is fixedly connected with the inner wall of the first through hole, and the inner hole of the first insert nut b4023 is threadedly connected with the adjusting bolt b403. The second insert nut b4024 is fixedly connected with the inner wall of the second through hole.

[0034] The first insert nut b4023 is fixedly connected with the inner wall of the first through hole, and the inner hole is threadedly connected with the adjusting bolt b403, which further strengthens the integrity of the insert nut and the outer cylinder b402, so that the adjusting bolt b403 can more stably exert force on the outer cylinder b402 during tightening, and the relative displacement between the insert nut and the through hole is reduced to affect the adjusting effect. Similarly, the fixed connection of the second insert nut b4024 and the inner wall of the second through hole also ensures the structural stability when switching to the second scraper b4022. When switching to the second scraper b4022, the inner hole of the second insert nut b4024 is also threadedly connected with the adjusting bolt b403, which provides a reliable basis for the use of the double-sided scraper of the outer cylinder b402.

[0035] Further, an annular cavity b404 is formed between the outer wall of the inner shaft b401 and the inner wall of the outer cylinder b402, the adjusting bolt b403 passes through the first insert nut b4023 and extends into the annular cavity b404, and then is threadedly connected with the corresponding threaded hole.

[0036] In the embodiment, the annular cavity b404 formed between the inner shaft b401 and the outer cylinder b402 effectively reduces the direct contact area of the outer cylinder b402 and the inner shaft b401, reduces the large-area adhesion and friction between the inner wall of the outer cylinder b402 and the outer wall of the inner shaft b401, reduces mechanical wear during long-term use, and prolongs the service life of the assembly.

[0037] Further, one end of the first insert nut b4023 extends into the annular cavity b404, and one end of the second insert nut b4024 extends into the annular cavity b404 and abuts against the outer wall of the inner shaft b401.

[0038] The first insert nut b4023 and the second insert nut b4024 are respectively located on the two sides of the outer cylinder b402 in the radial direction, and the one end of each is extended into the annular cavity b404. In actual use, since the back roller b300 is located below the comma doctor blade assembly, when the first doctor blade b4021 is used, the first doctor blade b4021 faces the back roller b300, and the first insert nut b4023 located on the opposite side is away from the back roller b300. The adjusting bolt b403 is screwed through the first insert nut b4023 and the inner shaft b401 (through the threaded hole) to be connected in a threaded manner, and at this time, the second insert nut b4024 located on the side close to the back roller b300 (i.e. on the low side under the action of gravity) is in abutment with the outer wall of the inner shaft b401, and the support of the inner shaft b401 is used to resist the bending and falling tendency of the outer cylinder b402 due to gravity; when switching to the second doctor blade b4022, correspondingly, at this time, the second doctor blade b4022 faces the back roller b300, and the second insert nut b4024 is located away from the back roller b300. The adjusting bolt b403 is screwed through the second insert nut b4024 and the inner shaft b401 (through the threaded hole) to be connected in a threaded manner, and at this time, the first insert nut b4023 is located on the side close to the back roller b300 (i.e. on the low side under the action of gravity) and is in abutment with the outer wall of the inner shaft b401, and continues to bear the gravity support. This design enables the outer cylinder b402 to maintain stable contact with the inner shaft b401 under the abutment of gravity in both working states.

[0039] Further, the convex point burr processing mechanism 300 further comprises a delivery roller b500, which is arranged on the rack 100, and the delivery roller b500 is located on the side of the back roller b300 away from the first guide assembly. The roller surface of the delivery roller b500 is respectively provided with a plurality of annular grooves along the axial direction.

[0040] The delivery roller b500 is a current collector output guide component after being processed by the comma doctor blade assembly. Its function is to stably transport the processed current collector to the slitting and rewinding mechanism 400. At this time, the surface of the current collector has been processed by scraping to achieve a high flatness, and it is necessary to avoid wrinkles or deviation again during output due to unstable transportation, otherwise it will affect the subsequent slitting and rewinding. Therefore, a plurality of annular grooves are arranged on the roller surface of the delivery roller b500 along the axial direction, and the working principle is the same as that of the annular grooves in the guide roller, which will not be repeated here.

[0041] Further, the convex point burr processing mechanism 300 further comprises a first linear motion assembly b600, the first linear motion assembly b600 comprises a first cylinder b601, a first sliding block b602 and a first guide rail b603, the cylinder body of the first cylinder b601 is fixedly arranged on the rack 100, the first guide rail b603 is fixedly arranged on the rack 100, the first guide rail b603 extends in a direction perpendicular to the axis of the back roller b300, the first sliding block b602 is movably arranged on the first guide rail b603, the first sliding block b602 is connected with the output end of the first cylinder b601, the first cylinder b601 drives the first sliding block b602 to move along the first guide rail b603, the first sliding block b602 is provided with a scraper seat b604, and the inner shaft b401 is installed on the scraper seat b604.

[0042] In the embodiment, the first cylinder b601 serves as a power source, the cylinder body of the first cylinder b601 is fixed on the rack 100, and stable linear driving force can be outputted, so that sufficient power support for position adjustment of the comma-shaped scraper assembly is ensured; the first guide rail b603 extends in a direction perpendicular to the axis of the back roller b300, and the direction design can directly correspond to the adjustment direction of the gap between the scraper opening and the back roller b300, so that the deviation of the fit between the scraper and the back roller b300 caused by the deviation of the adjustment direction is avoided; the first sliding block b602 is movably arranged on the first guide rail b603, the movement track of the sliding block is strictly constrained by the guide rail, so that shaking or deviation of the sliding block in the movement process is prevented, and the straightness of the adjustment is ensured; the first sliding block b602 is connected with the output end (piston rod) of the first cylinder b601, and simultaneously connected with the inner shaft b401 of the comma-shaped scraper assembly through the scraper seat b604, so that the driving force of the cylinder can be directly transmitted to the comma-shaped scraper assembly, and stable movement of the comma-shaped scraper assembly in the guide rail direction is realized. When the mechanism needs to be started, the first cylinder b601 drives the first sliding block b602 to move in the direction of approaching the back roller b300 along the guide rail, and drives the comma-shaped scraper assembly to move to the working position in which the collector on the surface of the back roller b300 forms a preset gap; when the mechanism is stopped or maintained, the cylinder drives the sliding block to move away from the back roller b300, so that the comma-shaped scraper assembly is separated from the working position.

[0043] Further, the convex point burr processing mechanism 300 further comprises a second linear motion assembly b700, the second linear motion assembly b700 comprises an adjusting hand wheel b701, a second sliding block b702, a second guide rail b703 and a second lead screw b704, the second guide rail b703 is fixedly arranged on the rack 100, the second guide rail b703 extends along a second direction, the second direction intersects with the extending direction of the first guide rail b603, the second lead screw b704 is rotationally arranged on the second guide rail b703, the extending direction of the second lead screw b704 is consistent with the extending direction of the second guide rail b703, the adjusting hand wheel b701 is fixedly arranged on one end of the second lead screw b704, the second sliding block b702 is slidingly arranged on the second guide rail b703, the second sliding block b702 is provided with a second nut, the second lead screw b704 cooperates with the second nut to drive the second sliding block b702 to move along the second guide rail b703; when the first sliding block b602 is driven by the first air cylinder b601 to move along the first guide rail b603 to the working position in the direction of approaching the back roller b300, the second sliding block b702 can move along the second guide rail b703 to abut against the first sliding block b602.

[0044] The embodiment is aimed at the problem of limited adjustment accuracy of the first linear motion assembly b600 (cylinder drive), and a second linear motion assembly b700 is added to realize fine adjustment of the comma doctor blade assembly, thereby further improving the scraping accuracy. In the first linear motion assembly b600, when the driving end (piston rod) of the first cylinder b601 extends, the cylinder body will be filled with compressed air, at which time the cooperation state of the cylinder body and the piston rod is similar to an "air bag", which has the characteristics of micro-deformation, rather than being completely rigidly fixed, which provides a key structural basis for subsequent micro-adjustment. In the second linear motion assembly b700, the second guide rail b703 is fixed on the rack 100 and extends in a second direction intersecting the extension direction of the first guide rail b603. The design of the intersecting direction ensures that the movement of the second sliding block b702 can transmit force to the first sliding block b602 by abutting; the second screw b704 is rotationally arranged on the second guide rail b703 and extends in the same direction as the guide rail, and the adjustment hand wheel b701 is fixed to one end of the screw. By rotating the hand wheel, the screw can be rotated, and by using the threaded cooperation between the screw and the second nut on the second sliding block b702, the rotational motion is converted into linear motion of the second sliding block b702 along the guide rail, realizing precise control of the position of the second sliding block b702. When the piston rod of the first cylinder b601 is driven to extend and drive the first sliding block b602 to move towards the back roller b300 to the working position, the operator can rotate the adjustment hand wheel b701 to drive the second sliding block b702 to move along the second guide rail b703 to the position abutting against the first sliding block b602. At this time, continue to rotate the hand wheel, and the second sliding block b702 will apply a continuous force to the first sliding block b602. Due to the "air bag" characteristics of the compressed air in the cylinder body of the first cylinder b601, the force is sufficient to slightly deform the air in the cylinder body, thereby driving the piston rod to retract into the cylinder body, allowing the first sliding block b602 to produce a small reverse displacement along the first guide rail b603, to realize precise adjustment of the gap between the doctor blade opening of the comma doctor blade assembly and the back roller b300. When the target gap is adjusted, stop rotating the adjustment hand wheel b701, and the threaded cooperation between the second screw b704 and the second nut will lock the position of the second sliding block b702, so that the extrusion force of the second sliding block b702 on the first sliding block b602 remains stable, and the deformation state of the air bag is also fixed, so that the piston rod does not displace, and the gap between the doctor blade opening and the back roller b300 is stably maintained.

[0045] Further, the first linear motion assembly b600 and the second linear motion assembly b700 are each provided with a group on both sides of the rack 100 along the axial direction of the back roller b300, and the first linear motion assembly b600 and the second linear motion assembly b700 on both sides of the rack 100 are symmetrically distributed.

[0046] The layout of the first linear motion assembly b600 and the second linear motion assembly b700 is limited in this embodiment, and the structure is symmetrically arranged on both sides of the rack 100 along the axis direction of the back roller b300. The core purpose is to ensure the adjustment synchronization and uniformity of force along the axial direction of the comma doctor blade assembly.

[0047] Further, the protrusion burr processing mechanism 300 also includes a air knife assembly b800, which is arranged on the rack 100, and the air knife assembly b800 is used to blow air flow to the current collector surface advancing in the first guide assembly to remove dust and impurities on the current collector surface.

[0048] During the pre-processing process of the current collector, such as rolling and cutting, dust, metal powder and other impurities are easily attached to the surface of the current collector. If these impurities enter the processing station of the back roller b300 and the doctor blade with the current collector, on the one hand, they may be pressed into the surface of the current collector by the doctor blade, forming new surface defects. On the other hand, they may wear the high-precision blade edge of the comma doctor blade, affecting the scraping precision, and even causing impurities to mix into the battery, reducing the safety and cycle life of the battery. The air knife assembly b800 is arranged on the rack 100 in this embodiment. In this embodiment, the air knife assembly b800 has two groups, and the air knives of the two groups of air knife assemblies b800 are respectively directed towards the first guide roller b201 and the second guide roller b202. The air knife assembly b800 is connected with an external air source, and the dust and impurities on the surface of the current collector are blown off by the impact force of the air flow.

[0049] Further, the protrusion burr processing mechanism 300 also includes a dust collection assembly b900, which is arranged on the rack 100, and the dust collection assembly b900 is used to adsorb and collect the protrusion burr debris scraped by the comma doctor blade assembly.

[0050] During the process of scraping the protrusion burr on the surface of the current collector, the comma doctor blade assembly will generate fine metal debris. If these debris cannot be timely treated, on the one hand, they may reattach to the surface of the processed current collector, forming secondary pollution and affecting the quality of subsequent electrode plate coating and battery assembly. On the other hand, they may scatter onto the moving parts such as guide rollers and sliding blocks inside the mechanism, causing part wear or jamming, affecting the running stability and service life of the mechanism. The dust collection assembly b900 is arranged on the rack 100, and the dust collection port thereof faces the back roller b300. The debris generated during scraping can be collected in real time (into an external designated container) through the negative pressure adsorption effect (the dust collection assembly b900 is connected with an external vacuum mechanism, and the vacuum mechanism is used to form negative pressure).

[0051] Further, the slitting and rewinding mechanism 400 further comprises a second guide assembly, which comprises a first guide roller c201, a second guide roller c202, a third guide roller c203, a fourth guide roller c204 and a fifth guide roller c205 arranged in sequence along the direction of the current collector in the rack 100, a plurality of annular grooves are arranged on the roller surface of the first guide roller c201 along the axial direction, the cutter assembly is located above the fifth guide roller c205, and the cutter assembly comprises a plurality of cutters c301 arranged along the axial direction of the fifth guide roller c205.

[0052] The first guide roller c201, the second guide roller c202, the third guide roller c203, the fourth guide roller c204 and the fifth guide roller c205 in the second guide assembly of the slitting and rewinding mechanism 400 of the embodiment are arranged in sequence along the direction of the current collector, and the core function is to guide the stable conveying of the current collector along the preset path, thereby providing a prerequisite for the accurate slitting of the subsequent cutter assembly. The roller surface of the first guide roller c201 is provided with a plurality of annular grooves along the axial direction, which can form axial positioning and tension dispersion effects on the current collector in conveying, thereby reducing the wrinkling phenomenon of the current collector during conveying. Especially when processing a wide-width current collector, the wide-width current collector is more susceptible to uneven tension or path deviation, which can cause wrinkles. The annular groove structure has a more prominent effect on suppressing wrinkles, and can better ensure that the current collector enters the subsequent slitting link in a flat state. The second guide roller c202, the third guide roller c203, the fourth guide roller c204 and the fifth guide roller c205 further assist in guiding the current collector, so that the current collector remains stable during conveying and avoids affecting the slitting accuracy due to fluctuations in the conveying path. The roller surface of the fourth guide roller c204 can also be provided with a plurality of annular grooves along the axial direction, which can form a synergistic effect with the first guide roller c201, thereby further strengthening the tension control of the current collector. Even when the width of the current collector is large, new wrinkles can be effectively avoided due to path extension or tension fluctuations before the current collector is conveyed to the fifth guide roller c205, thereby ensuring that the current collector remains flat before slitting. The cutter assembly is arranged above the fifth guide roller c205, which can perform axial slitting on the current collector passing through the fifth guide roller c205, thereby dividing the original current collector into a plurality of slitting current collectors that meet the subsequent winding requirements.

[0053] Further, the winding assembly comprises an upper winding assembly and a lower winding assembly, the upper winding assembly is arranged on the side of the fifth guide roller c205 away from the fourth guide roller c204, the upper winding assembly comprises a plurality of upper winding rollers c401 coaxially arranged and spaced along the axial direction; the lower winding assembly is arranged on the side of the fifth guide roller c205 away from the fourth guide roller c204, the lower winding assembly comprises a plurality of lower winding rollers c501 coaxially arranged and spaced along the axial direction, and the upper winding rollers c401 and the lower winding rollers c501 are staggered along the axial direction.

[0054] The upper winding assembly and the lower winding assembly are arranged on the side of the fifth guide roller c205 away from the fourth guide roller c204, and respectively undertake the winding task of the slit current collector. The plurality of upper winding rollers c401 of the upper winding assembly are coaxially arranged and spaced along the axial direction, and the plurality of lower winding rollers c501 of the lower winding assembly are also coaxially arranged and spaced along the axial direction. The spacing design can make each slit current collector correspond to one winding roller, avoiding the winding of multiple current collectors on the same winding roller. At the same time, the upper winding rollers c401 and the lower winding rollers c501 are staggered along the axial direction, avoiding mutual interference of the upper winding assembly and the lower winding assembly during winding, while ensuring that each slit current collector can correspond to an independent winding roller, realizing orderly winding, especially suitable for the scene of synchronous winding of multiple slit current collectors with wide width, improving winding efficiency and winding quality.

[0055] Further, the upper winding assembly further comprises a sixth guide roller c402, a seventh guide roller c403 and an eighth guide roller c404 arranged in sequence between the fifth guide roller c205 and the upper winding roller c401 along the direction of current collector travel, and a plurality of annular grooves are arranged on the roller surface of the eighth guide roller c404 along the axial direction. The lower winding assembly further comprises a ninth guide roller c502, a tenth guide roller c503 and an eleventh guide roller c504 arranged in sequence between the fifth guide roller c205 and the lower winding roller c501 along the direction of current collector travel, and a plurality of annular grooves are arranged on the roller surface of the eleventh guide roller c504 along the axial direction.

[0056] In the upper winding assembly, the sixth guide roller c402, the seventh guide roller c403 and the eighth guide roller c404 are arranged in sequence between the fifth guide roller c205 and the upper winding roller c401 along the direction of current collector travel, and the three guide rollers cooperatively guide the slit current collector to be accurately conveyed to each upper winding roller c401, avoiding the deviation or mutual winding of the slit single current collector during conveying. The annular grooves arranged on the roller surface of the eighth guide roller c404 along the axial direction can accurately position the slit current collector, especially for the slit single current collector with narrow width, effectively preventing deviation and wrinkles during conveying, and ensuring the smooth entry of the current collector into the upper winding roller c401. The lower winding assembly works in the same way, and the upper winding assembly and the lower winding assembly cooperatively realize the synchronous and stable conveying of the slit current collector on the upper and lower winding sides.

[0057] Further, the slitting and rewinding mechanism 400 further comprises two third linear motion assemblies, which are arranged on the frame 100, and the eighth guide roller c404 and the eleventh guide roller c504 are respectively arranged on the movable parts of the third linear motion assemblies, and the eighth guide roller c404 is driven by the third linear motion assembly to move close to or away from the upper winding roller, and the eleventh guide roller c504 is driven by the third linear motion assembly to move close to or away from the lower winding roller.

[0058] In the embodiment, taking the eighth guide roller c404 as an example, the third linear motion assembly is used to drive the eighth guide roller c404 to move, so as to flexibly adjust the distance between the eighth guide roller c404 and the upper winding roller c401, and adapt to the winding tension requirement of the current collector. The third linear motion assembly is arranged on the frame 100 at both ends of the eighth guide roller c404, and the third linear motion assembly comprises a third guide rail c601, a third sliding block c602, a third screw c603 and a third nut. The third guide rail c601 is fixedly arranged on the frame 100, and extends along the front-to-back direction of the current collector. The third sliding block c602 is movably arranged on the third guide rail c601. The third nut is connected with the third sliding block c602. The third screw c603 is threadedly connected with the third nut, and drives the third sliding block c602 to move along the third guide rail c601. The both ends of the eighth guide roller c404 are respectively connected with the third sliding block c602 in the third linear motion assembly. The two third linear motion assemblies are synchronously driven by a third servo motor c604 and a transmission rod c605. The third servo motor c604 is drivingly connected with the transmission rod c605. The transmission rod c605 is drivingly connected with the third screw c603 in the two third linear motion assemblies (power transmission is realized by a shaft coupling or a gear meshing). Similarly, the third linear motion assembly for driving the eleventh guide roller c504 in the embodiment is consistent with the above structure, and only the installation position corresponds to the lower winding assembly.

[0059] Further, the slitting and rewinding mechanism 400 further comprises a fourth linear motion assembly, which is arranged on the frame 100, and the fourth guide roller c204 is arranged on the movable part of the fourth linear motion assembly, and the fourth guide roller c204 is driven by the fourth linear motion assembly to move close to or away from the fifth guide roller c205.

[0060] The fourth linear motion assembly in the embodiment adopts a screw driving structure, and one of the fourth linear motion assemblies is arranged on the rack 100 at two ends of the fourth guide roller c204. The fourth linear motion assembly comprises an adjusting hand wheel c701, a fourth guide rail c702, a fourth screw c703, a fourth nut and a fourth sliding block c704. The fourth guide rail c702 is fixedly arranged on the rack 100 and extends in the up-down direction. The fourth sliding block c704 is movably arranged on the fourth guide rail c702. The adjusting hand wheel c701 is arranged at one end of the fourth screw c703. The fourth nut is connected with the fourth sliding block c704. The fourth screw c703 is threadedly connected with the fourth nut and drives the fourth sliding block c704 to move up and down along the fourth guide rail c702. The two ends of the fourth guide roller c204 are respectively connected with the fourth sliding block c704 in one of the fourth linear motion assemblies. During actual adjustment, the operator rotates the adjusting hand wheel c701 to drive the fourth screw c703 to rotate synchronously. The rotation is converted into the linear motion of the fourth sliding block c704 along the vertical guide rail through the threaded transmission between the fourth screw c703 and the fourth nut, thereby driving the fourth guide roller c204 to move up and down, and the adjustment of the distance between the fourth guide roller c204 and the fifth guide roller c205 is realized. The fourth guide rail c702 is provided with a scale line, and the operator can intuitively read the adjustment amount through the scale line to ensure that the adjustment amplitudes of the two ends of the fourth guide roller c204 are consistent. The position adjustment of the fourth guide roller c204 can optimize the tension distribution of the current collector.

[0061] Further, the upper winding assembly further comprises a fifth linear motion assembly, a plurality of first upper winding roller seats c405 and a plurality of second upper winding roller seats c406. The fifth linear motion assembly is arranged on the rack 100. The fifth linear motion assembly comprises a plurality of movable parts. The first upper winding roller seats c405 and the second upper winding roller seats c406 are arranged on the movable parts of the fifth linear motion assembly in a staggered manner. The two ends of the upper winding roller c401 are respectively mounted on the first upper winding roller seats c405 and the second upper winding roller seats c406. The first upper winding roller seats c405 and the second upper winding roller seats c406 are respectively driven by the fifth linear motion assembly to move along the axial direction of the upper winding roller c401.

[0062] The fifth linear motion assembly in the embodiment comprises a fifth guide rail c801 fixedly arranged on the rack 100, which extends along the axial direction of the upper winding roller c401. For example, the first upper winding roller seat c405 is arranged on the fifth sliding block c802 movably arranged on the fifth guide rail c801, and the hand wheel c803 is arranged on the fifth sliding block c802. The fifth sliding block c802 is driven to move along the fifth guide rail c801 through the gear and rack transmission structure. The second upper winding roller seat c406 is arranged in the same way. During actual adjustment, the operator needs to move the first upper winding roller seat c405 or the second upper winding roller seat c406, and rotate the corresponding hand wheel c803. Since the first upper winding roller seat c405 and the second upper winding roller seat c406 are respectively connected with independent fifth sliding blocks c802, the independent axial movement of the two types of roller seats can be realized by rotating the corresponding hand wheel c803, for example: when the upper winding roller c401 is assembled or disassembled, the corresponding first upper winding roller seat c405 and second upper winding roller seat c406 are moved to both sides, so that the installation space is quickly expanded, and the assembly or disassembly operation of the upper winding roller c401 is completed.

[0063] Further, the upper winding assembly further comprises an upper pressing wheel guide rail c901 and a plurality of upper pressing wheel assemblies. The upper pressing wheel guide rail c901 is arranged on the rack 100 and extends along the axial direction of the upper winding roller c401. The upper pressing wheel assembly comprises an upper pressing wheel sliding block c902, an upper pressing wheel cylinder c903, an upper pressing wheel swing arm c904, an upper pressing wheel seat c905 and an upper winding pressing wheel c906. The upper pressing wheel sliding block c902 is movably arranged on the upper pressing wheel guide rail c901. One end of the upper pressing wheel swing arm c904 is rotatably arranged on the upper pressing wheel sliding block c902. The upper pressing wheel seat c905 is arranged at the other end of the upper pressing wheel swing arm c904. The upper winding pressing wheel c906 is mounted on the upper pressing wheel seat c905. The upper pressing wheel cylinder c903 is arranged on the upper pressing wheel sliding block c902. The output end of the upper pressing wheel cylinder c903 is drivingly connected with the upper pressing wheel swing arm c904 through a connecting rod, so as to drive the upper winding pressing wheel c906 to abut or move away from the upper winding roller c401.

[0064] The upper pressing wheel slider c902 is movably arranged on the upper pressing wheel guide rail c901 by sliding fit in this embodiment, so that the upper pressing wheel assembly can move along the axis of the upper pressing wheel guide rail c901 to adapt to the position of the upper winding roller c401. In this embodiment, one end of the upper pressing wheel swing arm c904 is hingedly connected to the upper pressing wheel slider c902 by a rotating shaft, so that the swing arm can freely turn around the hinge point; the other end of the upper pressing wheel swing arm c904 is fixedly installed with the upper pressing wheel seat c905, and the upper winding pressing wheel c906 is rotatably assembled in the upper pressing wheel seat c905 through a bearing, so as to ensure that the upper winding pressing wheel c906 can roll synchronously with the upper winding roller c401. When auxiliary winding is needed, the output end (piston rod) of the upper pressing wheel cylinder c903 is extended to push the upper pressing wheel swing arm c904 to turn around the hinge point towards the direction close to the upper winding roller c401 through the connecting rod, until the upper winding pressing wheel c906 closely contacts the surface of the winding material of the current collector on the upper winding roller c401, so as to eliminate the gap between the winding material layers by using the pressing wheel pressure and ensure the winding tightness; when the roller needs to be replaced or the winding state needs to be adjusted, the output end (piston rod) of the cylinder is retracted to pull the upper pressing wheel swing arm c904 to turn away from the upper winding roller c401 through the connecting rod, so that the upper winding pressing wheel c906 is separated from the surface of the winding material.

[0065] Further, the lower winding assembly further comprises a sixth linear motion assembly, a plurality of first lower winding roller c501 seats and a plurality of second lower winding roller c501 seats, the sixth linear motion assembly is arranged on the rack 100, the sixth linear motion assembly comprises a plurality of movable parts, the first lower winding roller c501 seats and the second lower winding roller c501 seats are arranged on the movable parts of the sixth linear motion assembly in a staggered manner, the two ends of the lower winding roller c501 are respectively installed on the first lower winding roller c501 seats and the second lower winding roller c501 seats, and the first lower winding roller c501 seats and the second lower winding roller c501 seats are respectively driven by the sixth linear motion assembly to move along the axial direction of the lower winding roller c501.

[0066] The lower winding assembly of this embodiment is designed the same as the upper winding assembly described above, and details are not repeated here.

[0067] Further, the lower winding assembly further comprises a lower pressing wheel guide rail and a plurality of lower pressing wheel assemblies, the lower pressing wheel guide rail is arranged on the rack 100, the lower pressing wheel guide rail extends along the axial direction of the lower winding roller c501, the lower pressing wheel assembly comprises a lower pressing wheel sliding block, a lower pressing wheel cylinder, a lower pressing wheel swing arm, a lower pressing wheel seat and a lower winding pressing wheel c907, the lower pressing wheel sliding block is movably arranged on the lower pressing wheel guide rail, one end of the lower pressing wheel swing arm is rotatably arranged on the lower pressing wheel sliding block, the lower pressing wheel seat is arranged on the other end of the lower pressing wheel swing arm, the lower winding pressing wheel c907 is mounted on the lower pressing wheel seat, the lower pressing wheel cylinder is arranged on the lower pressing wheel sliding block, and the output end of the lower pressing wheel cylinder is in transmission connection with the lower pressing wheel swing arm through a connecting rod, so as to drive the lower winding pressing wheel c907 to abut or move away from the lower winding roller c501.

[0068] The lower pressing wheel guide rail and the lower pressing wheel assembly of the embodiment are designed as the upper winding assembly described above, and details are not repeated here.

[0069] Further, the cutter assembly further comprises a cutter sliding rail c302 and a plurality of cutter sliding blocks c303, the cutter sliding rail c302 is fixedly arranged on the rack 100, the cutter sliding rail c302 is located above the fifth guide roller c205, the cutter sliding rail c302 extends along the axial direction of the fifth guide roller c205, and the cutter sliding block c303 is movably arranged on the cutter sliding rail c302.

[0070] During operation, the cutter sliding block c303 can be pushed to slide along the sliding rail, so that the distance between the cutters c301 can be flexibly adjusted to adapt to the slitting requirements of the current collector with different widths.

[0071] Further, the slitting and rewinding mechanism 400 further comprises a dust blowing assembly, and the dust blowing assembly is used for blowing away the debris generated during the slitting of the current collector.

[0072] The slitting operation is prone to generate fine debris, and if the fine debris remains on the surface of the current collector, the quality of subsequent use will be affected, and if the fine debris accumulates in the gap of the equipment, the operation will be interfered. The dust blowing assembly is in communication with an external air source, and the air flow can blow away the debris, so that the surface of the current collector is kept clean, the internal environment of the equipment is kept clean, and the slitting and rewinding process is kept stable.

[0073] The preferred embodiments of the present application are described in detail above, but the present disclosure is not limited to the described embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present disclosure.

Claims

1. A current collector slitting and rewinding device, characterized in that, include: Rack (100); An unwinding mechanism (200) includes an unwinding roller disposed on the frame (100) and is used to carry the current collector roll to be processed. A burr removal mechanism (300) is located downstream of the unwinding mechanism (200). The burr removal mechanism (300) includes a first guide assembly, a back roller (b300), and a comma scraper assembly. The first guide assembly includes a plurality of guide rollers arranged sequentially on the frame (100) along the current collector travel direction, and at least on the roller surfaces of the first and last guide rollers along the current collector travel direction, a plurality of annular grooves are respectively spaced apart along their axial direction. The back roller (b300) is disposed on the frame (100) and is located downstream of the guide assembly. The comma scraper assembly is disposed on the frame (100), with the scraper blade facing the back roller (b300). The comma scraper assembly is used to scrape off burrs and bumps from the surface of the current collector. The slitting and rewinding mechanism (400) is located downstream of the burr and bump treatment mechanism (300). The slitting and rewinding mechanism (400) includes a cutting assembly and a winding assembly. The cutting assembly is used to slit the manifold, and the winding assembly is used to wind up the slit manifold.

2. The current collector slitting and rewinding equipment according to claim 1, characterized in that, The comma scraper assembly includes an inner shaft (b401), an outer cylinder (b402), and multiple adjusting bolts (b403). Both ends of the inner shaft (b401) are mounted on the movable portion of the first linear motion assembly (b600). The outer cylinder (b402) is movably fitted onto the inner shaft (b401). A first scraper opening (b4021) is formed on the outer wall of the outer cylinder (b402). The first scraper opening (b4021) extends along the outer cylinder (b402). Extending axially, the first scraper blade (b4021) faces the back roller (b300). On the outer cylinder (b402), a plurality of first through holes are spaced apart along the axial direction of the outer cylinder (b402) on the side opposite to the first scraper blade (b4021). On the outer wall of the inner shaft (b401), a plurality of threaded holes are spaced apart along the axial direction of the inner shaft (b401). The adjusting bolt (b403) passes through the first through hole and is threadedly connected to the corresponding threaded hole.

3. The current collector slitting and rewinding equipment according to claim 2, characterized in that, A second scraper opening (b4022) is also formed on the outer wall of the outer cylinder (b402). The second scraper opening (b4022) extends along the axial direction of the outer cylinder (b402). The first scraper opening (b4021) and the second scraper opening (b4022) are respectively located on both sides of the radial direction of the outer cylinder (b402). A plurality of second through holes are provided on the side of the outer cylinder (b402) opposite to the second scraper opening (b4022) along the axial direction of the outer cylinder (b402).

4. The current collector slitting and rewinding equipment according to claim 3, characterized in that, The first through hole is provided with a first insert nut (b4023), and the adjusting bolt (b403) passes through the first insert nut (b4023) and is threadedly connected to the corresponding threaded hole; the second through hole is provided with a second insert nut (b4024).

5. The current collector slitting and rewinding equipment according to claim 1, characterized in that, The burr removal mechanism (300) further includes a feed roller (b500), which is disposed on the frame (100). The feed roller (b500) is located on the side of the back roller (b300) away from the first guide assembly. The roller surface of the feed roller (b500) is provided with a plurality of annular grooves spaced apart along its axial direction.

6. The current collector slitting and rewinding equipment according to claim 2, characterized in that, The burr removal mechanism (300) further includes a first linear motion component (b600), which includes a first cylinder (b601), a first slider (b602), and a first guide rail (b603). The cylinder body of the first cylinder (b601) is fixedly mounted on the frame (100), and the first guide rail (b603) is fixedly mounted on the frame (100). The first guide rail (b603) extends in a direction perpendicular to the axis of the back roller (b300). The first slider (b602) is movably mounted on the first guide rail (b603). The first slider (b602) is connected to the output end of the first cylinder (b601). The first cylinder (b601) drives the first slider (b602) to move along the first guide rail (b603). A scraper seat (b604) is provided on the first slider (b602), and the inner shaft (b401) is mounted on the scraper seat (b604).

7. The current collector slitting and rewinding device according to claim 6, characterized in that, The burr removal mechanism (300) further includes a second linear motion component (b700), which includes an adjusting handwheel (b701), a second slider (b702), a second guide rail (b703), and a second lead screw (b704). The second guide rail (b703) is fixedly mounted on the frame (100) and extends along a second direction, which intersects with the extension direction of the first guide rail (b603). The second lead screw (b704) is rotatably mounted on the second guide rail (b703), and its extension direction is consistent with that of the second guide rail (b703). The wheel (b701) is fixedly mounted on one end of the second lead screw (b704), and the second slider (b702) is slidably mounted on the second guide rail (b703). The second slider (b702) is provided with a second nut. The second lead screw (b704) cooperates with the second nut to drive the second slider (b702) to move along the second guide rail (b703). When the first slider (b602) moves along the first guide rail (b603) towards the back roller (b300) to the working position under the drive of the first cylinder (b601), the second slider (b702) can move along the second guide rail (b703) to abut against the first slider (b602).

8. The current collector slitting and rewinding equipment according to claim 1, characterized in that, The slitting and rewinding mechanism (400) further includes a second guide assembly, which includes a first guide roller (c201), a second guide roller (c202), a third guide roller (c203), a fourth guide roller (c204), and a fifth guide roller (c205) arranged sequentially on the frame (100) along the current collector travel direction. The first guide roller (c201) has a plurality of annular grooves spaced apart along its axial direction on its roller surface. The cutter assembly is located above the fifth guide roller (c205), and the cutter assembly includes a plurality of cutters (c301) spaced apart along the axial direction of the fifth guide roller (c205).

9. The current collector slitting and rewinding device according to claim 8, characterized in that, The winding assembly includes an upper winding assembly and a lower winding assembly. The upper winding assembly is located on the side of the fifth guide roller (c205) away from the fourth guide roller (c204), and includes a plurality of coaxially arranged and axially spaced upper winding rollers (c401). The lower winding assembly is located on the side of the fifth guide roller (c205) away from the fourth guide roller (c204), and includes a plurality of coaxially arranged and axially spaced lower winding rollers (c501). The upper winding rollers (c401) and the lower winding rollers (c501) are staggered axially.

10. The current collector slitting and rewinding device according to claim 9, characterized in that, The upper take-up assembly further includes a sixth guide roller (c402), a seventh guide roller (c403), and an eighth guide roller (c404) arranged sequentially between the fifth guide roller (c205) and the upper take-up roller (c401) along the current collector travel direction. The eighth guide roller (c404) has a plurality of annular grooves spaced apart along its axial direction on its roller surface. The lower take-up assembly further includes a ninth guide roller (c502), a tenth guide roller (c503), and an eleventh guide roller (c504) arranged sequentially between the fifth guide roller (c205) and the lower take-up roller (c501) along the current collector travel direction. The eleventh guide roller (c504) has a plurality of annular grooves spaced apart along its axial direction on its roller surface.

Images