Pole piece slitting equipment

Abstract

The pole piece slitting equipment comprises an upper cutter set and a lower cutter set, at least one of the upper cutter set and the lower cutter set comprises a cutter rotary part, a cutter sleeve and a cutter, and the cutter is annularly arranged on the cutter sleeve; the periphery of the cutter screw comprises a thread area and a non-thread area adjacent to the thread area in the axial direction of the cutter screw. Threads are formed in the inner circumference of the cutter sleeve in the axial direction, the cutter sleeve is arranged on the outer circumference of the cutter screw in a sleeving mode, partial area of the inner circumference of the cutter sleeve is in clamping fit with the non-thread area of the cutter screw, and the remaining area of the inner circumference of the cutter sleeve is in thread fit with the thread area of the cutter screw; when the cutter rotates in a rotating state, the cutter sleeve can move in the axial direction of the threaded area so that the cutter leaning amount of the upper cutter set and the lower cutter set can be adjusted. According to the pole piece slitting equipment, the non-threaded area is in clamping fit with the cutter sleeve, the threaded area of the cutter is beneficial to driving the cutter sleeve to move in the rotating state of the cutter, screw fixing is not needed, manual screw dismounting is not needed, operation is easy, the cutter leaning amount can be reliably adjusted, and meanwhile production efficiency can be improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of pole piece processing, and particularly relates to a pole piece slitting device. Background Art

[0002] In the manufacturing process of lithium-ion batteries, in the slitting process, it is necessary to slit the wide-width pole piece tape after coating into multiple widths. After slitting, it is necessary to detect the quality problems such as the size and burrs of the pole piece. If quality problems occur, it is necessary to re-adjust the tool approach amount (the distance between the upper tool and the lower tool) of the equipment. In the related art, the tool spindle is locked by screws. When it is necessary to adjust the tool approach amount, the operator climbs onto the equipment to loosen the screws and manually rotates the tool spindle to adjust the tool approach amount. In this process, the operation is cumbersome, and there are problems that the cutting tool is easy to scratch the operator and the production efficiency is low. Summary of the Utility Model

[0003] In view of the above defects or deficiencies in the prior art, it is desirable to provide a pole piece slitting device in which the non-threaded area of the tool spindle is tightly fitted with the tool sleeve, and the threaded area of the tool spindle is conducive to driving the tool sleeve to move in the state of tool rotation, without screw fixation and without manual removal of screws, with simple operation, reliable adjustment of the tool approach amount, and improvement of production efficiency.

[0004] The utility model provides a pole piece slitting device, including: an upper tool group and a lower tool group, at least one of the upper tool group and the lower tool group includes a tool spindle, a tool sleeve and a cutting tool, and the cutting tool is arranged around the tool sleeve;

[0005] At least one outer periphery of the tool spindle includes a threaded area and a non-threaded area adjacent to the threaded area along its axis;

[0006] The inner periphery of the tool sleeve is provided with threads and sleeved on the outer periphery of the tool spindle, and a partial area of the inner periphery of the tool sleeve is tightly fitted with the non-threaded area of the tool spindle, and the remaining area of the inner periphery of the tool sleeve is in threaded fit with the threaded area of the tool spindle;

[0007] When the tool spindle is in a rotating state, the tool sleeve can move along the axis of the threaded area to realize the adjustment of the tool approach amount of the upper tool group and the lower tool group.

[0008] As an optional solution, when the tool spindle rotates in the first direction, the tool sleeve can move along the axis of the threaded area away from the non-threaded area;

[0009] When the tool spindle rotates in the second direction, the tool sleeve can move along the axis of the threaded area close to the non-threaded area until it is tightly fitted with the non-threaded area; wherein, the first direction and the second direction are opposite.

[0010] As an alternative solution, it further includes: an adjusting component, which includes a driving member and a transmission member. The transmission member is drivingly connected to the driving member and is detachably connected to the threaded area. The driving member drives the transmission member to drive the cutter to rotate, so that the cutter sleeve moves along the axial direction of the threaded area.

[0011] As an alternative solution, the transmission member includes a transmission shaft. A threaded portion is formed on the outer peripheral part of the transmission shaft, and the thread of the transmission shaft is in threaded engagement with the thread of the threaded area;

[0012] The thread direction of the transmission shaft is opposite to the thread direction of the threaded area.

[0013] As an alternative solution, an avoidance area is further formed on the transmission shaft. When the thread of the transmission shaft is in engagement with the threaded area, the avoidance area corresponds to the cutting tool and there is a first gap between the avoidance area and the outer edge of the cutting tool.

[0014] As an alternative solution, the transmission member can move towards or away from the threaded area. When the transmission member moves towards the cutter to the first position, the transmission member is detachably connected to the threaded area. When the transmission member moves away from the cutter to the second position, the transmission member is separated from the threaded area, and there is a second gap between the transmission member and the outer edge of the cutting tool.

[0015] As an alternative solution, it further includes an upper cutter shaft and a lower cutter shaft. The upper cutter shaft and the lower cutter shaft are arranged in parallel at intervals. The upper cutter set is sleeved on the upper cutter shaft, and the lower cutter set is sleeved on the lower cutter shaft.

[0016] As an alternative solution, bearings are respectively installed on the upper cutter shaft and the lower cutter shaft, and the inner wall of the cutter sleeve is fitted with the outer ring of the bearing.

[0017] As an alternative solution, the transmission shaft is arranged adjacent to the upper cutter shaft and / or the lower cutter shaft, and the transmission shaft is parallel to the upper cutter shaft or the lower cutter shaft.

[0018] As an alternative solution, it further includes a bracket. The upper cutter shaft and the lower cutter shaft are installed on the bracket, and a rotating motor is installed on the bracket. The rotating motor is respectively drivingly connected to the upper cutter shaft and the lower cutter shaft;

[0019] The adjusting component is installed on the bracket.

[0020] In the pole piece slitting equipment of the present utility model, by providing a threaded area and a non-threaded area on the cutter sleeve, the non-threaded area is used to tightly fit and fix the cutter sleeve with the cutter sleeve, and the threaded area is used to drive the cutter sleeve to move along the axial direction of the threaded area when the cutter sleeve is in a rotating state, so as to realize the adjustment of the approaching amount of the upper cutter set and the lower cutter set. There is no need to use screws to fix the cutter sleeve, so when it is necessary to adjust the approaching amount, the operator does not need to climb onto the equipment to loosen the screws, liberating the labor force, and it is beneficial to conveniently and reliably adjust the approaching amount, thereby improving the production efficiency. Description of the Drawings

[0021] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0022] Figure 1 Schematic structural diagram of a pole piece slitting device according to an embodiment of the present application;

[0023] Figure 2 Front view of a pole piece slitting device according to an embodiment of the present application;

[0024] Figure 3 Top view of a pole piece slitting device according to an embodiment of the present application;

[0025] Figure 4 Schematic structural diagram of an upper knife set in a pole piece slitting device according to an embodiment of the present application;

[0026] Figure 5 Schematic structural diagram of a knife sleeve and a cutting knife in a pole piece slitting device according to an embodiment of the present application;

[0027] Figure 6 Schematic structural diagram of a knife rotation in a pole piece slitting device according to an embodiment of the present application;

[0028] In the figure,

[0029] 100, pole piece slitting device;

[0030] 10, upper knife set, 11, knife rotation, 111, threaded area, 112, non-threaded area, 12, knife sleeve, 13, cutting knife;

[0031] 20, adjustment assembly, 21, servo motor, 22, lead screw, 221, protrusion, 222, avoidance area,

[0032] 30, upper knife shaft, 40, rotating motor, 50, bracket, 60, cylinder. Detailed implementation manners

[0033] The present application will be further described in detail below with reference to the embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model and are not intended to limit the utility model.

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the embodiments.

[0035] An embodiment of the present application provides a pole piece slitting device 100, as Figures 1-6As shown, the pole piece slitting device 100 includes: an upper knife group 10 and a lower knife group. At least one of the upper knife group 10 and the lower knife group includes a knife spindle 11, a knife sleeve 12, and a cutting knife 13. The cutting knife 13 is arranged around the knife sleeve 12 in a ring shape;

[0036] As Figure 6 shown, the outer periphery of the knife spindle 11 includes a threaded area 111 and a non-threaded area 112 adjacent to the threaded area 111 along the axial direction;

[0037] The inner periphery of the knife sleeve 12 is provided with threads along the axial direction and is sleeved on the outer periphery of the knife spindle 11. A partial area of the inner periphery of the knife sleeve 12 is in clamping fit with the non-threaded area 112, and the remaining area of the inner periphery of the knife sleeve 12 is in threaded fit with the threaded area 111;

[0038] When the knife spindle 11 is in a rotating state, the knife sleeve 12 can move along the axial direction of the threaded area 111 to realize the adjustment of the approaching amount of the upper knife group 10 and the lower knife group.

[0039] It should be noted that the knife spindle 11 refers to a component that can rotate and drive the knife sleeve 12 and the cutting knife 13 to rotate, mainly used to support the knife sleeve 12 and the cutting knife 13; the knife sleeve 12 is used to install and support the cutting knife 13. The cutting knife 13 is arranged around the outer periphery of the knife sleeve 12, which is beneficial to ensuring the stable rotation of the cutting knife 13, so as to reliably cut the pole piece. The inner periphery of the knife sleeve 12 is provided with threads for cooperating with the knife spindle 11; the cutting knife 13 is used to cut the pole piece. The cutting knives 13 of the upper knife group 10 and the lower knife group are both annular knives. The cutting knives 13 of the upper knife group 10 and the lower knife group correspond to each other and cooperate with each other. Specifically, the cutting edges of the cutting knives 13 of the upper knife group 10 and the lower knife group are close to each other but have an approaching gap. In a rotating state, when the cutting edges of the cutting knives 13 of the upper knife group 10 and the lower knife group rotate at the same step speed as the pole piece, the cutting of the pole piece can be realized.

[0040] It can be understood that the approaching amount specifically refers to the distance between the cutting knives 13 of the upper knife group 10 and the lower knife group. Adjusting the approaching amount is beneficial to adjusting the width of the pole piece after slitting and can also avoid problems such as burrs. In some embodiments, the upper knife group 10 and the lower knife group can be adjusted simultaneously; of course, only the upper knife group 10 or the lower knife group can also be adjusted. Correspondingly, the knife spindles 11 of the upper knife group 10 and the lower knife group can each include a threaded area 111 and a non-threaded area 112; of course, it can also be that the knife spindle 11 of one of the upper knife group 10 and the lower knife group includes a threaded area 111 and a non-threaded area 112, and the remaining knife spindle 11 can adopt the existing structure of the knife spindle 11 and be fixed by screws.

[0041] In a preferred embodiment, the adjustment of the knife approaching amount is generally achieved only by adjusting the upper knife set 10, that is, the tool holder 12 and the cutting tool 13 of the upper knife set 10 can move along the axial direction of the tool spindle 11, and the tool holder 12 and the cutting tool 13 of the lower knife set are fixed on the tool spindle 11. That is to say, the tool spindle 11 of the upper knife set 10 includes a threaded area 111 and a non-threaded area 112, with a simple adjustment structure, easy to set up, and convenient to operate.

[0042] Among them, the threaded area 111 of the tool spindle 11 is used for threadedly mating with the tool holder 12 under the rotation of the tool spindle 11 to drive the tool holder 12 to move along the axial direction of the threaded area 111. The non-threaded area 112 of the tool spindle 11 is used for the tool holder 12 to cooperate and clamp with the non-threaded area 112 of the tool spindle 11 when the tool holder 12 moves to the non-threaded area 112, so as to avoid the problem that relative movement between the tool holder 12 and the tool spindle 11 caused by the rotation of the tool spindle 11 during the cutting operation results in non-cutting.

[0043] It can also be understood that in actual use, according to the actual demand for the knife approaching amount, the rotation direction of the tool spindle 11 can be controlled to adjust the tool holder 12 to move away from or close to the non-threaded area 112 along the axial direction of the threaded area 111. For example, when the tool spindle 11 is controlled to rotate forward, the tool holder 12 moves away from the non-threaded area 112 along the axial direction of the threaded area 111, and the knife approaching amount increases; when the tool spindle 11 is controlled to rotate reversely, the tool holder 12 moves close to the non-threaded area 112 along the axial direction of the threaded area 111. The knife approaching amount decreases. Of course, in some embodiments, when the tool spindle 11 rotates, the tool holder 12 can only move away from or close to the non-threaded area 112 along the axial direction of the threaded area 111 singly. The embodiments of the present application do not make specific limitations on this, as long as the rotation of the tool spindle 11 can drive the tool holder 12 to move along the threaded area 111 to achieve the adjustment of the knife approaching amount.

[0044] Exemplarily, during the slitting operation of the lithium battery electrode sheet, the lithium battery electrode sheet is unrolled and passes through the gap between the upper knife set 10 and the lower knife set. The upper knife set 10 and the lower knife set rotate synchronously, and the cutting tools 13 of the upper knife set 10 and the cutting tools 13 of the lower knife set that rotate forward and backward can cooperate to slit the lithium battery electrode sheet passing through the unrolling. When there are multiple cutting tools 13, such as n cutting tools 13, in both the upper knife set 10 and the lower knife set, the lithium battery electrode sheet passing through the unrolling can be slit into n + 1 electrode strips.

[0045] The pole piece slitting equipment of the embodiment of the present application solves the problems that the existing cutting tool 13 is fixed to the tool spindle 11 by screws, and operators need to climb onto the equipment to loosen the screws and then adjust the tool approach amount, resulting in cumbersome operations, and there are problems such as the cutting tool 13 scratching the operators and low production efficiency. In the pole piece slitting equipment of the embodiment of the present application, a threaded area 111 and a non-threaded area 112 are provided on the tool spindle 11. The non-threaded area 112 is used to be clamped and fixed with the tool sleeve 12, and the threaded area 111 is used to drive the tool sleeve 12 to move along the axial direction of the threaded area 111 when the tool spindle 11 is in a rotating state, so as to realize the adjustment of the tool approach amount between the upper tool group 10 and the lower tool group. There is no need to use screws to fix the tool sleeve 12, so when the tool approach amount needs to be adjusted, operators do not need to climb onto the equipment to loosen the screws, liberating the labor force, and it is beneficial to conveniently and reliably adjust the tool approach amount, thereby improving the production efficiency.

[0046] As an implementable way, when the tool spindle 11 rotates along the first direction, the tool sleeve 12 can move away from the non-threaded area 112 along the axial direction of the threaded area 111;

[0047] When the tool spindle 11 rotates along the second direction, the tool sleeve 12 can move closer to the non-threaded area 112 along the axial direction of the threaded area 111 until it is clamped and fixed with the non-threaded area 112; wherein, the first direction and the second direction are opposite.

[0048] Wherein, the first direction can be but is not limited to clockwise, counterclockwise or other directions. Correspondingly, the second direction is the opposite direction of the first direction;

[0049] This embodiment is beneficial for flexibly adjusting the tool approach amount on the one hand, and on the other hand, it is also beneficial for fixing the tool sleeve 12 and the tool spindle 11 to ensure that the cutting tool 13 can normally slit the pole piece.

[0050] As an implementable way, the pole piece slitting equipment further includes: an adjusting assembly 20. The adjusting assembly 20 includes a driving member and a transmission member. The transmission member is drivingly connected to the driving member, and the transmission member is detachably connected to the threaded area 111. The driving member drives the transmission member to drive the tool spindle 11 to rotate, so that the tool sleeve 12 moves along the axial direction of the threaded area 111.

[0051] In this embodiment, the adjusting assembly 20 is used to drive the tool spindle 11 to rotate and drive the tool sleeve 12 to move along the axial direction of the threaded area 111 to realize the adjustment of the tool approach amount. Thus, there is no need for manual adjustment, liberating the labor force, being beneficial to improving the adjustment accuracy, and timely determining the position of the cutting tool 13, and the time consumption is short, thereby improving the production efficiency.

[0052] Wherein, the driving member can be various types of driving motors, such as but not limited to a servo motor 21 or a rotating motor, etc.

[0053] The transmission member can be a transmission shaft, a gear, a connecting rod or other components connected to the drive shaft of the drive motor; of course, in some embodiments, the transmission member can still be a combination of a worm and a worm gear, and the embodiments of the present application do not make specific limitations in this regard, as long as it can drive the cutter head 11 to rotate under the drive of the driving member.

[0054] The transmission member and the thread area 111 can be connected by any detachable connection method, such as but not limited to thread connection, gear meshing or key connection, etc., as long as it is ensured that when the tool approach amount needs to be adjusted, the transmission member and the thread area 111 are reliably fitted and connected to drive the cutter head 11 to rotate; when the tool approach amount does not need to be adjusted, the transmission member and the thread area 111 are separated, without affecting the normal rotation of the cutter group to cut the pole piece. Among them, the detachable connection between the transmission member and the thread area 111 is beneficial to the separation of the transmission mechanism and the thread area 111, and ensures that the cutter of the upper cutter group can reliably cut the pole piece.

[0055] In a preferred embodiment, the transmission member includes a transmission shaft, and a thread is formed in a partial area on the outer periphery of the transmission shaft, and the thread of the transmission shaft is in threaded fit with the thread area 111.

[0056] Among them, a thread is formed in a partial area on the outer periphery of the transmission shaft for threaded fit with the thread area 111 of the cutter head 11, and no thread is formed in other areas on the outer periphery of the transmission shaft, which is beneficial to locking after the transmission shaft and the thread area 111 are in threaded fit, and avoids that when the transmission shaft rotates, only the threads rub against each other and cannot be clamped, resulting in the inability to drive the cutter head 11 to rotate.

[0057] In some embodiments, threads can also be provided on the entire outer periphery of the transmission shaft. After the transmission shaft is in threaded fit with the thread area 111, the transmission shaft and the thread area 111 are fixed by an additional locking member to ensure that the transmission shaft can reliably drive the cutter head 11 to rotate.

[0058] In this embodiment, the transmission shaft has a simple structure, is easy to process, has a simple operation, and can reliably drive the cutter head 11 to rotate.

[0059] In a preferred embodiment, the thread direction of the transmission shaft is opposite to the thread direction of the thread area 111.

[0060] In this embodiment, the thread direction of the transmission shaft is opposite to the thread direction of the thread area 111, which is beneficial to direct locking after the transmission shaft and the thread area 111 are fitted, without the need for an additional locking member, has a simple structure, is easy to implement, and can reliably ensure that the transmission shaft drives the cutter head 11 to rotate.

[0061] As an implementable manner, an avoidance area 222 is also formed on the transmission shaft. When the thread of the transmission shaft is in a fitted state with the thread area 111, the avoidance area 222 corresponds to the cutter 13 and there is a first gap with the outer edge of the cutter 13.

[0062] Among them, the avoidance area 222 can be a groove formed on the transmission shaft. Of course, in some embodiments, the transmission shaft includes a main body and a protrusion 221 formed on the main body. Threads are formed on the protrusion 221 for cooperation with the threaded area 111 of the cutter rotation 11. Thus, the space between the side of the protrusion 221 and the main body is configured as the avoidance area 222.

[0063] It can be understood that since the cutter sleeve 12 is sleeved on the cutter rotation 11 and the cutting tool 13 is arranged around the cutter sleeve 12, the distance between the transmission shaft and the outer edge of the cutting tool 13 is less than the distance between the transmission shaft and the outer circumference of the cutter rotation 11. Thus, the existence of the avoidance area 222 reliably increases the distance between the transmission shaft and the outer edge of the cutting tool 13, so that there is a gap between the outer edge of the cutting tool 13 and the transmission shaft after the threaded area 111 of the transmission shaft and the cutter rotation 11 are in threaded cooperation, without interference, thereby ensuring that the transmission shaft can reliably drive the cutter rotation 11 to rotate.

[0064] In this embodiment, the avoidance area 222 is beneficial to avoiding interference between the transmission shaft and the cutting tool 13, thereby ensuring reliable cooperation between the transmission shaft and the threaded area 111 of the cutter rotation 11.

[0065] In a preferred embodiment, the size of the avoidance area 222 in the direction parallel to the axis of the cutter rotation 11 is at least greater than the approaching amount and less than or equal to the length of the threaded area 111. Thus, when the cutter rotation 11 rotates to drive the cutter sleeve 12 to move axially along the threaded area 111, the outer edge of the cutting tool 13 and the transmission shaft will not interfere with each other, and the approaching amount can be reliably adjusted.

[0066] In a preferred embodiment, the transmission member includes a lead screw 22.

[0067] In this embodiment, the lead screw 22 has a simple structure and can reliably cooperate with the threaded area 111 of the cutter rotation 11. The driving member drives the lead screw 22 to rotate, thereby driving the cutter rotation 11 to rotate and the cutter sleeve 12 to move axially along the threaded area 111.

[0068] In some embodiments, the transmission member can move towards or away from the threaded area 111. When the transmission member moves towards the cutter rotation 11 to the first position, the transmission member is detachably connected to the threaded area 111. When the transmission member moves away from the cutter rotation 11 to the second position, the transmission member is separated from the threaded area 111, and there is a second gap between the transmission member and the outer edge of the cutting tool 13.

[0069] In this embodiment, the transmission can move towards or away from the cutter rotation 11, which is beneficial to controlling the transmission member to move towards the cutter rotation 11 and be detachably connected to the cutter rotation 11 when the approaching amount needs to be adjusted, so as to reliably drive the cutter rotation 11 to rotate; when the pole piece needs to be normally slit, controlling the transmission member to move away from the cutter rotation 11, so that the transmission shaft is separated from the spiral area of the cutter rotation 11. Thus, when the cutter group rotates at high speed to cut the pole piece, the transmission shaft will not interfere with the cutter group, ensuring reliable operation of the cutter group.

[0070] It can be understood that the transmission member can move along a direction parallel to the axis of the thread region 111, so that the thread of the transmission member approaches or moves away from the thread region 111, realizing the cooperation or separation with the thread region 111; of course, the transmission member can also move along a direction perpendicular to the axis of the thread region 111, so that the thread of the transmission member approaches or moves away from the thread region 111, realizing the cooperation or separation with the thread region 111. The embodiments of the present application do not limit this.

[0071] In some embodiments, the transmission member is drivingly connected to the cylinder 60, and the cylinder 60 drives the transmission member to move closer to or away from the thread region 111 along a direction perpendicular to the axis of the thread region 111;

[0072] In some embodiments, the pole piece slitting device further includes an upper tool shaft 30 and a lower tool shaft. The upper tool shaft 30 and the lower tool shaft are arranged in parallel at intervals. The upper tool group 10 is sleeved on the upper tool shaft 30, and the lower tool group is sleeved on the lower tool shaft.

[0073] The upper tool shaft 30 and the lower tool shaft in the embodiments of the present application are mainly used to drive the upper tool group 10 and the lower tool group to rotate respectively, so as to cut the pole piece.

[0074] It can be understood that the upper tool shaft 30 and the lower tool shaft are arranged in parallel, and each of the upper tool shaft 30 and the lower tool shaft is respectively connected to a driving motor; of course, a transmission mechanism can also be arranged between the upper tool shaft 30 and the lower tool shaft. In this way, only one driving motor can be arranged to drive the upper tool group 10 and the lower tool group at the same time.

[0075] In some embodiments, bearings are respectively installed on the upper tool shaft 30 and the lower tool shaft, and the inner wall of the tool rotation 11 is matched with the outer ring of the bearing.

[0076] The bearings in this embodiment are beneficial to the reliable rotation of the upper tool shaft 30 and the lower tool shaft to drive the upper tool group 10 and the lower tool group.

[0077] In some other embodiments, bearing seats are further arranged on the pole piece slitting device 100, including upper and lower two groups of bearing seat groups respectively used for arranging the upper tool shaft 30 and the lower tool shaft. Each group of bearing seat groups includes two bearing seats arranged opposite to each other on the left and right. Among them, the left and right ends of the upper tool shaft 30 are rotatably arranged on the left and right two bearing seats of the upper bearing seat group through bearings, and bearing end covers are used to protect the bearings; similarly, the left and right ends of the lower tool shaft are rotatably arranged on the left and right two bearing seats of the lower bearing seat group through bearings, and bearing end covers are used to protect the bearings.

[0078] In the preferred embodiment, the transmission shaft is arranged adjacent to the upper tool shaft 30 and / or the lower tool shaft, and the transmission shaft is parallel to the upper tool shaft 30 or the lower tool shaft.

[0079] It can be understood that the transmission shaft can be arranged adjacent to the upper cutter shaft 30, or the transmission shaft can also be arranged adjacent to the lower cutter shaft. Of course, the transmission shaft can also be arranged at positions adjacent to both the upper cutter shaft 30 and the lower cutter shaft at the same time. To simplify the device structure, generally the transmission shaft is only arranged adjacent to the upper cutter shaft 30 and is parallel to the upper cutter shaft 30, which is beneficial to reliably driving the cutter rotation 11 of the upper cutter group 10 to realize the adjustment of the tool approach amount. And compared with the transmission shaft arranged adjacent to the lower cutter shaft, arranging the transmission shaft adjacent to the upper cutter shaft 30 is more convenient for processing and more convenient for adjusting the tool approach amount.

[0080] The setting mode of the transmission shaft in this embodiment is beneficial to ensuring the reliable adjustment of the tool approach amount and is beneficial to ensuring the holding accuracy when the transmission shaft cooperates with the cutter rotation 11, thereby effectively improving the accuracy of adjustment.

[0081] In some embodiments, the driving member includes a servo motor 21.

[0082] Adopting the servo motor 21 in this embodiment is beneficial to recording the number of adjustment turns, so that the position of the cutting tool 13 can be recorded. In this way, the position of the cutting tool 13 can be accurately obtained, and the accuracy of the tool approach amount adjustment can be improved.

[0083] As an implementable manner, the pole piece slitting device further includes a bracket 50. The upper cutter shaft 30 and the lower cutter shaft are installed on the bracket 50. A rotating motor 40 is installed on the bracket 50, and the rotating motor 40 is respectively drivingly connected to the upper cutter shaft 30 and the lower cutter shaft;

[0084] The adjusting assembly 20 is installed on the bracket 50.

[0085] It can be understood that the bracket 50, as the main body of the entire pole piece slitting device, is mainly used to support and install other components such as the upper cutter shaft 30, the lower cutter shaft, the upper cutter group 10, the lower cutter group, the rotating motor 40, the driving member, and the transmission member. The specific structure of the bracket 50 is not specifically limited in the embodiments of the present application and can be designed according to actual needs.

[0086] Among them, the rotating motor 40 is respectively drivingly connected to the upper cutter shaft 30 and the lower cutter shaft, which is beneficial to reliably driving the upper cutter shaft 30 and the lower cutter shaft to rotate, thereby driving the upper cutter group 10 and the lower cutter group to rotate and cutting the pole piece;

[0087] The adjusting assembly 20 is installed on the bracket 50. On the one hand, it makes the structure of the entire pole piece slitting device compact. On the other hand, it is convenient to cooperate with the cutter rotation 11 and drive the cutter rotation 11 to rotate, so that the adjustment of the tool approach amount can be reliably realized.

[0088] In a second aspect, an embodiment of the present application provides a method for adjusting the knife approach amount of a pole piece slitting device 00. The pole piece slitting device 00 includes an upper knife group 10 and a lower knife group. At least one of the upper knife group 10 and the lower knife group includes a knife spindle 11, a knife sleeve 12, and a cutting knife 13. The cutting knife 13 is arranged around the knife sleeve 12 in a ring shape;

[0089] Axially along the outer circumference of the knife spindle 11, there are a threaded area 111 and a threaded area 112 adjacent to the threaded area 111;

[0090] The inner circumference of the knife sleeve 12 is axially provided with threads and sleeved on the outer circumference of the knife spindle 11. A partial area of the inner circumference of the knife sleeve 12 is in clamping fit with the threaded area 112 of the knife spindle 11, and the remaining area of the inner circumference of the knife sleeve 12 is in threaded fit with the threaded area 111 of the knife spindle 11;

[0091] The pole piece slitting device 00 further includes an adjusting assembly 20. The adjusting assembly 20 includes a driving member and a transmission member. The transmission member is drivingly connected to the driving member, and the transmission member is detachably connected to the threaded area 111. The driving member drives the transmission member to drive the knife spindle 11 to rotate;

[0092] The method for adjusting the knife approach amount includes the following steps:

[0093] Match and clamp the transmission member with the threaded area 111 of the knife spindle 11;

[0094] Control the driving member to drive the transmission member to drive the knife spindle 11 to rotate;

[0095] Under the action of the threaded fit between the threaded area 111 of the knife spindle 11 and the inner circumference of the knife sleeve 12, the rotation of the knife spindle 11 drives the knife sleeve 12 to move axially along the threaded area 111, so as to realize the adjustment of the knife approach amount of the upper knife group 10 and the lower knife group.

[0096] In summary, for the pole piece slitting device of the embodiment of the present application, by providing a threaded area 111 and a non-threaded area 112 on the knife spindle 11, the non-threaded area 112 is used for clamping and fixing the knife sleeve 12 in cooperation, and the threaded area 111 is used to drive the knife sleeve 12 to move axially along the threaded area 111 when the knife spindle 11 is in a rotating state, so as to realize the adjustment of the knife approach amount of the upper knife group 10 and the lower knife group. There is no need to use screws to fix the knife sleeve 12, so when it is necessary to adjust the knife approach amount, it is not necessary for the operator to climb onto the device to loosen the screws, which liberates the labor force, is conducive to conveniently and reliably adjusting the knife approach amount, and thus improves the production efficiency;

[0097] Moreover, by providing the adjusting assembly 20, it is conducive to automatically driving the cutter rotation 11 to rotate, realizing the adjustment of the tool approach amount, and facilitating the improvement of the portability and accuracy of the adjustment; the transmission member can also move toward or away from the threaded area 111 of the cutter rotation 11, which is beneficial to controlling the transmission member to move toward the cutter rotation 11 and detachably connecting with the cutter rotation 11 when the tool approach amount needs to be adjusted, and reliably driving the cutter rotation 11 to rotate; when the pole piece needs to be normally slit, the transmission member is controlled to move away from the cutter rotation 11, so that the transmission shaft is separated from the spiral area of the cutter rotation 11, thus ensuring that the transmission shaft will not interfere with the cutter group when the cutter group rotates at a high speed to cut the pole piece, and ensuring the reliable operation of the cutter group.

[0098] Next, a specific embodiment is used to illustrate the pole piece slitting equipment of the present application.

[0099] As Figures 1-6 shown, the pole piece slitting equipment 100 includes a bracket 50, on which an upper cutter shaft 30, a lower cutter shaft and a rotating motor 40 are installed. The rotating motor 40 is respectively drivingly connected to the upper cutter shaft 30 and the lower cutter shaft. An upper cutter group 10 is provided on the upper cutter shaft 30, and a lower cutter group is provided on the lower cutter shaft; a servo motor 21 and a lead screw 22 are also provided on the bracket 50. The lead screw 22 is arranged adjacent to the upper cutter shaft 30 and is parallel to the upper cutter shaft 30. The lead screw 22 is drivingly connected to the servo motor 21. A part of the upper area of the lead screw 22 is a protrusion 221, and a thread is provided on the circumferential direction of the protrusion 221. The space between the edge of the protrusion 221 of the lead screw 22 and the lead screw 22 body is configured as an avoidance area 222, and the avoidance area 222 can be used to avoid the cutting tool 13 to prevent interference between the lead screw 22 and the outer edge of the cutting tool 13;

[0100] Both the upper cutter group 10 and the lower cutter group include a cutter rotation 11, a cutter sleeve 12 and a cutting tool 13. The cutting tool 13 is arranged around the cutter sleeve 12. The outer circumference of the cutter rotation 11 of the upper cutter group 10 includes a threaded area 111 and a non-threaded area 112 adjacent to the threaded area 111 along its axial direction. The cutter sleeve 12 is sleeved on the outer circumference of the cutter rotation 11. A part of the inner circumference of the cutter sleeve 12 is tightly fitted with the non-threaded area 112, and the remaining area of the inner circumference of the cutter sleeve 12 is threadedly fitted with the threaded area 111;

[0101] The thread direction of the lead screw 22 is opposite to that of the thread area 111 of the cutter rotor 11. The lead screw 22 can move away from the thread area 111. When the lead screw 22 moves towards the thread area 111 and they cooperate, the servo motor 21 drives the lead screw 22 to rotate. The lead screw 22 drives the cutter rotor 11 to rotate, causing the cutter sleeve 12 to move along the axial direction of the thread area 111, which can be used to adjust the tool approach amount. When cutting the pole piece is required, the lead screw 22 moves away from the thread area 111, separating the lead screw 22 from the cutter rotor 11, and there is a gap between the lead screw 22 and the outer edge of the cutting tool 13. Among them, when the lead screw 22 drives the cutter rotor 11 to rotate clockwise, the cutter sleeve 12 can move away from the non-thread area 112 along the axial direction of the thread area 111. When the lead screw 22 drives the cutter rotor 11 to rotate counterclockwise, the cutter sleeve 12 can move closer to the non-thread area 112 along the axial direction of the thread area 111 until it is clamped and fitted with the non-thread area 112.

[0102] During the actual use process, when the pole piece slitting action is normally executed, the lead screw 22 and the thread area 111 of the cutter rotor 11 are in a separated state. When the tool approach amount needs to be adjusted, the lead screw 22 moves towards the thread area 111 and cooperates with the thread area 111 of the cutter rotor 11. The servo motor 21 operates to drive the lead screw 22 to rotate. The lead screw 22 drives the cutter rotor 11 to rotate, causing the cutter sleeve 12 to move along the axial direction of the thread area 111 of the cutter rotor 11, realizing the adjustment of the tool approach amount. During this process, by recording the number of adjustment turns through the servo motor 21, the position of the cutting tool 13 can be accurately recorded. When the adjustment of the tool approach amount is completed, the lead screw 22 is driven to move away from the thread area 111, separating the lead screw 22 from the thread area 111, and there is a gap between the lead screw 22 and the outer edge of the cutting tool 13, ensuring that the entire upper tool group 10 can rotate normally driven by the upper tool shaft 30.

[0103] The pole piece slitting equipment of the embodiment of the present application liberates the labor force, reduces the requirements for operators, greatly reduces the safety risks of operators, and can reduce the debugging time of the equipment, improve production efficiency, and improve product quality.

[0104] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept of the utility model. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. The pole piece slitting equipment is characterized in that, Comprising: An upper knife set and a lower knife set, at least one of the upper knife set and the lower knife set includes a knife spindle, a knife sleeve and a cutting knife, and the cutting knife is arranged around the knife sleeve; At least one outer periphery of the knife spindle axially includes a threaded area and a non-threaded area adjacent to the threaded area; The inner periphery of the knife sleeve is axially provided with threads and sleeved on the outer periphery of the knife spindle, and a partial area of the inner periphery of the knife sleeve is in clamping fit with the non-threaded area of the knife spindle, and the remaining area of the inner periphery of the knife sleeve is in threaded fit with the threaded area of the knife spindle; When the knife spindle is in a rotating state, the knife sleeve can move axially along the threaded area to realize the adjustment of the approaching amount of the upper knife set and the lower knife set.

2. The pole piece cutting device according to claim 1, characterized in that, When the knife spindle rotates in a first direction, the knife sleeve can move axially along the threaded area away from the non-threaded area; When the knife spindle rotates in a second direction, the knife sleeve can move axially along the threaded area close to the non-threaded area until it is in clamping fit with the non-threaded area; wherein, the first direction and the second direction are opposite.

3. The pole piece slitting device according to claim 1, wherein, Further comprising: An adjusting assembly, the adjusting assembly includes a driving member and a transmission member, the transmission member is drivingly connected to the driving member, the transmission member is detachably connected to the threaded area, and the driving member drives the transmission member to drive the knife spindle to rotate so that the knife sleeve moves axially along the threaded area.

4. The pole piece slitting device according to claim 3, characterized in that, The transmission member includes a transmission shaft, and a partial area of the outer periphery of the transmission shaft is formed with threads, and the threads of the transmission shaft are in threaded fit with the threaded area; The thread direction of the transmission shaft is opposite to the thread direction of the threaded area.

5. The pole piece slitting device according to claim 4, wherein An avoidance area is further formed on the transmission shaft. When the threads of the transmission shaft are in fit with the threaded area, the avoidance area corresponds to the cutting knife and there is a first gap with the outer edge of the cutting knife.

6. The pole piece slitting device according to claim 3, characterized in that, The transmission member can move towards or away from the threaded area. When the transmission member moves towards the knife spindle to a first position, the transmission member is detachably connected to the threaded area; when the transmission member moves away from the knife spindle to a second position, the transmission member is separated from the threaded area, and there is a second gap between the transmission member and the outer edge of the cutting knife.

7. The pole piece slitting device according to claim 4, wherein, Further comprising an upper knife shaft and a lower knife shaft, the upper knife shaft and the lower knife shaft are arranged in parallel at intervals, the upper knife set is sleeved on the upper knife shaft, and the lower knife set is sleeved on the lower knife shaft.

8. The pole piece slitting device according to claim 7, characterized in that, Bearings are respectively installed on the upper knife shaft and the lower knife shaft, and the inner wall of the knife spindle is in fit with the outer ring of the bearing.

9. The pole piece slitting device according to claim 7, characterized in that, The transmission shaft is arranged adjacent to the upper knife shaft and / or the lower knife shaft, and the transmission shaft is parallel to the upper knife shaft or the lower knife shaft.

10. The pole piece slitting equipment according to claim 7, wherein, Further comprising a bracket, the upper knife shaft and the lower knife shaft are installed on the bracket, and a rotating motor is installed on the bracket, and the rotating motor is respectively drivingly connected to the upper knife shaft and the lower knife shaft; The adjusting assembly is installed on the bracket.

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