Copper strip slitting device

Abstract

The invention relates to a copper strip slitting device which comprises a workbench provided with a mounting plane, a first slitting assembly and a second slitting assembly located below the first slitting assembly are arranged on the mounting plane, and the first slitting assembly comprises a first rotating shaft capable of rotating controllably and a plurality of first circular slitting knives arranged outside the first rotating shaft in a sleeving mode; the second slitting assembly comprises a second rotating shaft capable of controlling rotation and a plurality of second circular slitting knives arranged outside the second rotating shaft in a sleeving mode, the axis of the first rotating shaft and the axis of the second rotating shaft are both located in a first plane perpendicular to the installation plane, and the upper slitting knives and the lower slitting knives are arranged in parallel. The edge, facing the mounting plane, of the first circular slitting knife coincides with the edge, away from the mounting plane, of the second circular slitting knife, the coincidence value is larger than the thickness of the copper strip, and a shearing gap between the two is configured to form a concentrated shearing stress area. By means of the structural combination, the slitting device effectively solves the problems of tearing, burrs and the like caused by inaccurate control over shearing parameters, the shearing quality is improved, the equipment adaptability is improved, and the service life of a cutter is prolonged.

Description

Technical Field

[0001] The present invention relates to a slitting device, and particularly to a copper strip slitting device. Background Art

[0002] In the field of metal processing and manufacturing, copper strip materials are widely used in multiple industries such as electrical connection, motor winding, battery structure, and heat dissipation devices. Due to the characteristics of good ductility, high conductivity, thin thickness, and low strength of copper strips, higher requirements are imposed on dimensional accuracy, edge quality, and slitting smoothness during the processing. To meet the requirements of the subsequent processes for the bandwidth, edge flatness, and burr-free of copper strips, it is often necessary to perform high-precision longitudinal slitting on the wide-width copper strip raw materials through slitting equipment. Therefore, developing a copper strip slitting device with reasonable structure, high slitting accuracy, and stable operation is an important technical direction in the field of precision processing of metal strips.

[0003] In the prior art, copper strip slitting equipment usually adopts a structure form of upper and lower blades for cutting, including an upper blade assembly and a lower blade assembly arranged on a workbench. Each blade assembly includes a plurality of circular slitting knives arranged at intervals along the axial direction. The slitting knife is installed on a controllably rotatable rotating shaft through a jacket or a bushing and rotates synchronously with the rotating shaft. The upper and lower slitting knives are arranged in a staggered manner to form a plurality of shearing channels for realizing continuous longitudinal shearing of the copper strip. During actual operation, the copper strip enters between the upper and lower blades along the feeding path of the equipment and is cut by the circular slitting knives arranged in a staggered manner, thereby forming a plurality of copper strip strips with the same width. In the existing devices, the axes of the upper and lower rotating shafts are usually set parallel and perpendicular to the installation surface to form a vertical shearing cooperation relationship.

[0004] However, in the above structure, due to the lack of precise control over the shearing gap and the blade overlap amount between the upper and lower blades, quality problems such as incision tearing, edge burrs, uneven cross-sections, and incomplete cutting are likely to occur, especially when slitting copper strips with a smaller thickness. At the same time, some existing solutions only set the overlap depth and gap of the upper and lower blades based on experience and fail to perform adaptive adjustment according to the characteristics of the copper strip material, and cannot balance the slitting quality and the durability of the equipment. Therefore, there is an urgent need to propose a new type of copper strip slitting device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a copper strip slitting device that, through structural optimization and blade arrangement design, while ensuring complete cutting of the copper strip, constructs a stable and effective shear stress concentration area, thereby improving the slitting quality and extending the tool life.

[0006] The technical solution adopted by the present invention to solve the above problems is: a copper strip slitting device, comprising:

[0007] A workbench, including an installation plane;

[0008] The first slitting assembly is arranged at the installation plane. The first slitting assembly includes a first rotating shaft that rotates under control and a plurality of first circular slitting knives sleeved outside the first rotating shaft.

[0009] The second slitting assembly is arranged at the installation plane. The second slitting assembly is located between the first slitting assembly and the installation plane. The second slitting assembly includes a second rotating shaft that rotates under control and a plurality of second circular slitting knives sleeved outside the second rotating shaft. The second rotating shaft rotates synchronously with the second rotating shaft, and the axes of the second rotating shaft and the first rotating shaft are both located in a first plane. The first plane is perpendicular to the installation plane, and the second circular slitting knives are arranged in parallel with the first circular slitting knives.

[0010] Wherein, the edge of the first circular slitting knife facing the edge of the installation plane coincides with the edge of the second circular slitting knife far from the installation plane, and the coincidence value is greater than the thickness of the copper strip. Moreover, the shearing gap between the first circular slitting knife and the adjacent second circular slitting knife is configured to form a concentrated shearing stress zone when the copper strip passes through the slitting device for slitting.

[0011] Preferably, the shearing gap is obtained by the following formula:

[0012]

[0013] Wherein:

[0014] C is the shearing gap.

[0015] t is the thickness of the copper strip.

[0016] σ s is the shearing strength of the copper strip.

[0017] E is the elastic modulus of the copper strip material.

[0018] k1 is an empirical adjustment factor.

[0019] Preferably, the coincidence value is obtained by the following formula:

[0020]

[0021] Wherein:

[0022] P is the coincidence value.

[0023] μ is the friction coefficient between the first circular slitting blade or the second circular slitting blade and the copper strip.

[0024] k2 is an empirical adjustment factor.

[0025] Preferably, the overlapping value between the edge of the first circular cutting knife facing the mounting plane and the edge of the second circular cutting knife away from the mounting plane is between 1.1 times and 1.3 times the thickness of the copper strip.

[0026] Preferably, the shearing gap is between 0.08 times and 0.12 times the thickness of the copper strip.

[0027] Preferably, the slitting device further includes an adjusting bracket, and the adjusting bracket includes:

[0028] A mounting frame, arranged at the mounting plane, a second bearing is installed in the mounting frame, and the second rotating shaft is connected to the mounting frame through the second bearing;

[0029] An adjusting component, controlled to move towards or away from the mounting frame, a first bearing is installed in the adjusting frame, and the first rotating shaft is connected to the adjusting frame through the first bearing.

[0030] Preferably, the adjusting component includes:

[0031] A shaft seat, the first bearing is arranged inside the shaft seat, and the first rotating shaft is connected to the shaft seat through the first bearing;

[0032] A bracket, connected to the mounting frame;

[0033] A worm gear, rotatably connected to the bracket, and a through groove is axially formed through the center of the worm gear along its own axis;

[0034] An internally threaded tube, arranged inside the through groove;

[0035] A threaded rod, threadedly connected to the internally threaded tube, and one end of the threaded rod extends outside the internally threaded tube, and the end of the threaded rod outside the internally threaded tube is connected to the shaft seat, so that the shaft seat moves along with the threaded rod;

[0036] A worm, rotatably connected to the bracket, and the worm meshes with the worm gear.

[0037] Preferably, the slitting device further includes a driving mechanism, and the driving mechanism includes:

[0038] A driver, including an output shaft that rotates controllably;

[0039] A transmission component, including an input end and two output ends, the transmission component is configured such that when the input end rotates, the two output ends rotate synchronously, and the two output ends are respectively in transmission connection with the first rotating shaft and the second rotating shaft, so that the first rotating shaft and the second rotating shaft rotate synchronously.

[0040] Preferably, the slitting device further includes:

[0041] The first linear guide rail is arranged at the installation plane;

[0042] The first slider is slidably connected to the first linear guide rail, and the mounting bracket is arranged on the first slider;

[0043] The first screw nut is connected to the first slider;

[0044] The first lead screw is restricted to rotate controllably around its own axis, and the first lead screw is threadedly connected to the first screw nut.

[0045] Preferably, the slitting device further includes a limit and guiding mechanism arranged at the installation plane, and the limit and guiding mechanism includes:

[0046] The second linear guide rail is arranged on the installation plane;

[0047] Two second sliders are both slidably connected to the second linear guide rail;

[0048] Two groups of pulleys are arranged on the two second sliders in a one-to-one correspondence;

[0049] The driving member is connected to the two second sliders, and the driving member is configured to controllably drive the two second sliders to move relatively or away from each other synchronously, and the moving direction of the second slider is parallel to the axis of the first rotating shaft.

[0050] The beneficial effects of the embodiments in the present invention:

[0051] Since the copper strip slitting device adopts the structure of upper and lower two groups of slitting components, wherein the edge of the first circular slitting knife facing the installation plane and the edge of the second circular slitting knife away from the installation plane are vertically coincident, and the coincidence value is greater than the thickness of the copper strip, and at the same time, the shear gap between the two is set in a matching manner to form a concentrated shear stress area, therefore, it effectively solves the problems of slitting quality such as incision tearing, edge burrs, and incomplete cutting caused by inaccurate control of the coincidence amount and shear gap between the upper and lower blades in the prior art, and further realizes the technical effects of neat shear cross-section of the copper strip, improved edge quality, enhanced slitting stability, and synchronous improvement of the device versatility and tool life. Description of the Drawings

[0052] Figure 1 It is a schematic front view of the slitting device proposed in a preferred embodiment shown in the present invention.

[0053] Figure 2 It is a schematic top view of the slitting device proposed in a preferred embodiment shown in the present invention.

[0054] Figure 3 It is a schematic side view of a slitting device proposed in a preferred embodiment shown by the present invention.

[0055] Wherein: 10, workbench; 110, mounting plane; 20, first slitting assembly; 210, first rotating shaft; 220, first circular slitting knife; 30, second slitting assembly; 310, second rotating shaft; 320, second circular slitting knife; 40, adjusting bracket; 410, mounting frame; 420, second bearing; 430, adjusting assembly; 431, shaft seat; 432, bracket; 433, worm gear; 434, internally threaded tube; 435, threaded rod; 436, worm; 440, first bearing; 50, driving mechanism; 510, driver; 520, transmission assembly; 521, input end; 522, output end; 60, first linear guide rail; 70, first slider; 80, first screw sleeve; 90, first lead screw; 100, limiting and guiding mechanism; 1010, second linear guide rail; 1020, second slider; 1030, pulley; 1040, driving part. Specific embodiments

[0056] The following will further describe in detail the specific embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0057] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the creation of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0058] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific situations.

[0059] See Figures 1 - 3 , a preferred embodiment of the present application provides a copper strip slitting device, which is suitable for high-precision longitudinal slitting of continuously conveyed metal copper strips and is widely used in fields such as battery manufacturing, electrical connector processing, and heat dissipation component preparation.

[0060] The slitting device includes a workbench 10, a first slitting assembly 20, and a second slitting assembly 30. Among them, the workbench 10 includes an installation plane 110; the first slitting assembly 20 is arranged at the installation plane 110, and the first slitting assembly 20 includes a first rotating shaft 210 that is controlled to rotate and a plurality of first circular slitting knives 220 sleeved outside the first rotating shaft 210; the second slitting assembly 30 is arranged at the installation plane 110, the second slitting assembly 30 is located between the first slitting assembly 20 and the installation plane 110, the second slitting assembly 30 includes a second rotating shaft 310 that is controlled to rotate and a plurality of second circular slitting knives 320 sleeved outside the second rotating shaft 310, the second rotating shaft 310 rotates synchronously with the second rotating shaft 310, and the axes of the second rotating shaft 310 and the first rotating shaft 210 are both located in a first plane, the first plane is perpendicular to the installation plane 110, and the second circular slitting knives 320 are arranged parallel to the first circular slitting knives 220. Among them, the edge of the first circular slitting knife 220 facing the edge of the installation plane 110 coincides with the edge of the second circular slitting knife 320 away from the installation plane 110, and the coincidence value is greater than the thickness of the copper strip, and, the shearing gap between the first circular slitting knife 220 and the adjacent second circular slitting knife 320 is configured to form a concentrated shearing stress zone when the copper strip passes through the slitting of the slitting device.

[0061] Specifically:

[0062] The workbench 10 serves as a bearing base of the slitting device, and an installation plane 110 is constructed thereon for installing the first slitting assembly 20 and the second slitting assembly 30. The installation plane 110 is set as a horizontally extending reference plane for defining the arrangement direction of the slitting mechanism and ensuring the stability of the overall structure.

[0063] The first slitting assembly 20 is arranged at the installation plane 110, which includes a controllable rotating first rotating shaft 210, and a plurality of first circular slitting knives 220 are fixed outside the first rotating shaft 210 through shaft sleeves. The plurality of first circular slitting knives 220 are arranged at intervals in the axial direction for realizing longitudinal cutting of the copper strip. The first rotating shaft 210 is driven to rotate by a driving mechanism 50 and can adjust the rotation speed according to process requirements to achieve synchronous cutting.

[0064] The second slitting component 30 is also disposed at the installation plane 110 and is located between the first slitting component 20 and the installation plane 110, that is, below the first slitting component 20, and is used to cooperate with the first slitting component 20 to form a shearing structure. The second slitting component 30 includes a second rotating shaft 310 that is controlled to rotate and a plurality of second circular slitting knives 320 fixed on the outside thereof. The plurality of second circular slitting knives 320 are arranged at equal intervals along the axial direction and are staggered with the corresponding first circular slitting knives 220. Synchronous control is performed between the second rotating shaft 310 and the first rotating shaft 210 to achieve relative rotational cooperation, ensuring that the copper strip obtains continuous and uniform shearing when passing through the two groups of blades.

[0065] The axes of the first rotating shaft 210 and the second rotating shaft 310 are both located in a common first plane perpendicular to the installation plane 110, and the rotation planes of the respective circular slitting knives are parallel to each other to construct a stable shearing structure. Specifically, the edge of the first circular slitting knife 220 facing the installation plane 110 coincides vertically with the edge of the second circular slitting knife 320 away from the installation plane 110, and the depth of this coincidence is greater than the thickness of the copper strip, so as to ensure that the copper strip can be completely cut off without tearing or remaining connected during the slitting process.

[0066] More importantly, in the above structure, a shearing channel is formed between the first circular slitting knife 220 and the adjacent second circular slitting knife 320. The shearing gap of this channel is precisely configured so that when the copper strip passes through this shearing channel, its stress-bearing area is concentrated at the intersection position of the upper and lower blades, thereby forming a so-called "concentrated shearing stress zone".

[0067] The so-called concentrated shearing stress zone refers to the process in which the copper strip passes through the shearing channel formed by the staggered upper and lower circular slitting knives. Since the gap between the upper and lower blades is slightly smaller than the thickness of the copper strip, and there is an overlap amount exceeding the thickness between the blade edges, the shearing force is mainly concentrated on the narrow band area in the middle of the copper strip. At this time, a shearing band with high stress concentration is formed in this area of the copper strip, generating severe shear strain, enabling the material to quickly reach the shearing fracture condition, thereby achieving a slitting effect with clear cross-section and neat incision. The formation principle of the concentrated shearing stress zone is to induce local yielding of the material through structural cooperation, so that the shearing process mainly occurs in the form of pure shear fracture, avoiding tensile fracture, tearing or deformation expansion, and significantly improving the slitting quality.

[0068] The above structure is applicable to copper strip processing environments with various different thicknesses and materials. For highly ductile or extremely thin copper strip materials, the distance or overlap depth between the first and second slitting knives can be appropriately adjusted according to process requirements to adapt to the shear resistance of different materials, further expanding the applicable range of the equipment.

[0069] In other embodiments, the circular slitting knife can be made of cemented carbide tool, stainless steel or composite ceramic material, and the installation method of the blade can be a replaceable structure, so as to facilitate maintenance or flexibly replace the blade according to the material type. The driving mechanism 50 can be a servo motor cooperating with an encoder to achieve high-precision rotational speed synchronization control, further ensuring the shearing consistency.

[0070] In this embodiment, since the copper strip slitting device adopts the structure of two sets of slitting components, the upper and lower ones, where the edge of the first circular slitting knife 220 facing the installation plane 110 coincides with the edge of the second circular slitting knife 320 away from the installation plane 110 in the vertical direction, and the coincidence value is greater than the thickness of the copper strip. At the same time, the shearing gap between the two is set in a matching manner to form a concentrated shearing stress area. Therefore, it effectively solves the problems of slitting quality such as incision tearing, edge burrs, and incomplete cutting caused by inaccurate control of the coincidence amount and shearing gap between the upper and lower blades in the prior art. Furthermore, it realizes the technical effects of neat shearing cross-section of the copper strip, improved edge quality, enhanced slitting stability, and simultaneous improvement of the device versatility and tool life.

[0071] The above shearing gap is obtained through the following formula:

[0072] Where:

[0073] C is the shearing gap.

[0074] t is the thickness of the copper strip.

[0075] σ s is the shearing strength of the copper strip.

[0076] E is the elastic modulus of the copper strip material.

[0077] k1 is an empirical adjustment factor.

[0078] The reasons for adopting the above formula are specifically as follows:

[0079] The shearing behavior of materials is essentially a process of yielding and fracture. When the metal copper strip is sheared between the first circular slitting knife blade 220 and the second circular slitting knife blade 320, it will go through the following typical stages:

[0080] The elastic deformation (related to E) stage. When initially pressed in, the copper foil undergoes a small elastic compression. The "harder" (the greater the elastic modulus) it is, the more difficult it is to press in. The plastic shearing yield (related to σ s related) stage. Once the shearing stress exceeds the shearing strength, the material is cut along the edge of the knife. Therefore, the size of the ideal shearing gap C should balance the above two mechanical behaviors.

[0081] Physical parameter Function Trend <![CDATA[σ s > Shear resistance of the material (the larger, the more difficult to shear) An increase leads to a decrease in C E Elastic anti - deformation ability (the larger, the stiffer) An increase leads to an increase in C t Determine the shear path and the minimum support distance An increase leads to an increase in C

[0082] The following relationships are formed among the above three:

[0083] C ∝ t: The greater the thickness, the greater the clearance should be. When the shear strength of the material dominates (i.e., ), the clearance tends to 0, which is a situation where shearing is "extremely difficult" (such as brittle materials). When the material is soft Shearing is easy and the clearance can be increased moderately. Therefore, using this formula conforms to the natural laws of energy input, yield threshold, and deformation amount during the shearing process.

[0084] Moreover, this formula also eliminates the fixed dependence on specific materials and has universality. Traditional method: Set the shearing clearance through "empirical values", such as "taking 10% of the thickness", which is sensitive to material differences and does not have generalization ability. And this formula, by adding a correction term. Automatically reduces the clearance when the material is hard, and retains a reasonable deformation space when the material is softer. Therefore, this formula has adaptability and does not require separate experiments to be set for different materials. Further, this formula also introduces k1 as an adjustment factor to control the actual assembly or tool state error. The sharpness of the first circular cutting blade 220 pieces and the second circular cutting blade 320 pieces, the installation clearance between the first circular cutting blade 220 pieces and the adjacent second circular cutting blade 320 pieces, and the equipment accuracy can all be adjusted uniformly. Specifically:

[0085] k1 is not a physical constant directly determined by the material properties, but a "correction coefficient" that comprehensively considers the following three types of error factors, including mechanical structure manufacturing and assembly deviations, performance degradation under actual operating conditions, and fine-tuning optimization under specific production conditions. Therefore, the role of k1 is to establish an elastic transition layer between the ideal mathematical model and the actual engineering system to offset inevitable non-ideal factors. And how to uniformly absorb and compensate for specific error factors through k1 is described in detail below:

[0086] First, it is the change in the sharpness of the blade. The blade gradually becomes dull with use, and the stress required to cut into the copper strip increases, resulting in shear position deviation and more burrs on the cross-section. The value of k1 can be appropriately increased to increase the shearing clearance C, so as to provide a larger deformation space, enabling the dull blade to also complete shearing and at the same time slowing down the critical point of the tool life end.

[0087] Second, the deviation of the tool installation clearance. There may be micron-level errors during the installation of the blade (such as loose collet, inaccurate positioning), causing a slight deviation in the position of the cutting edge, resulting in a larger or smaller shearing channel. Setting k1 to be slightly larger than the theoretical value (such as increasing from 1.00 to 1.05) can absorb this static deviation while ensuring the shearing force and ensure that the shearing channel is within a safe and controllable range.

[0088] Finally, there is the equipment motion precision error. During continuous operation, the servo mechanism and support shaft system of the equipment may experience minor dynamic jitters or oscillations due to thermal expansion, vibration, load, etc., which affect the consistency of the actual shearing point. Therefore, by adjusting k, the control system dynamically adjusts this value according to the vibration detection or tool setting detection results during each initialization or automatic tool setting stage to compensate for the system instability error and achieve closed-loop control of the shearing point stability.

[0089] In summary, k1 is embedded in the shearing gap calculation formula. By adjusting only this single parameter, it can act on all structural error factors simultaneously. k1 can be obtained in real time through methods such as experimental calibration, historical data accumulation, and vision / sensor recognition. k1 can be used as an adjustment variable in the control system and is called by the process parameter library, material database, and equipment operation status evaluation module. When there is no detection system, the operator can also assign different k1 values by manually setting the process level (such as "fine slitting" or "ordinary slitting") to achieve simple and rapid adjustment. By introducing the adjustment factor k1 into the shearing gap model, the present invention uniformly absorbs the shearing state errors caused by factors such as the decrease in blade sharpness, tool installation clearance deviation, and insufficient equipment operation precision, enabling the shearing gap to automatically adapt under non-ideal conditions and maintaining the consistency of the shearing section quality, thereby improving the robustness and operation fault tolerance of the system.

[0090] Finally, continue to illustrate the improvement of the application effect of the above formula (actual improvement performance). First, reduce the burr and tearing rate. As long as the gap is properly controlled, the copper strip breaks neatly along the cutting edge to form a "shearing cross-section", which can avoid edge tearing caused by too large a gap or material extrusion by the blade due to too small a gap. Second, improve the slitting precision and yield. By automatically linking the gap with the thickness and material rigidity, the equipment can adapt to different copper strips (even aluminum foils), reducing frequent debugging and improving the production line efficiency. Finally, reduce tool wear. Since too small a shearing gap is likely to cause interference between the upper and lower blades, this formula effectively extends the blade life through dynamic adjustment.

[0091] The aforementioned empirical adjustment factor k1 can be obtained through the following methods:

[0092] First, collect experimental data. For example: conduct shearing experiments on the following materials and record the minimum burr-free gap C.

[0093]

[0094]

[0095] Second, substitute into the formula to solve for k1 by inversion. Taking the first set of data as an example:

[0096]

[0097] And so on, calculate the corresponding k1, as shown in the following table:

[0098] Material k Electrolytic copper 1.005 Soft copper 1.047 Aluminum foil 1.143 Hard copper 0.890

[0099] As can be seen from the above table, the recommended range of k1 in actual use is 0.8 to 1.2. The empirical adjustment factor k1 is obtained by back-calculating based on the function model of physical laws and experimental data. It reflects the correction terms of system deviations such as blade sharpness, installation accuracy, surface state of copper strip, and lubrication conditions. It is recommended that the default value in actual use be k = 1.0, and it can be adjusted appropriately according to the equipment / materials.

[0100] The coincidence value of the edge of the first circular slitting knife 220 facing the mounting plane 110 and the edge of the second circular slitting knife 320 away from the mounting plane 110 can be obtained through the following formula:

[0101]

[0102] Where:

[0103] P is the coincidence value.

[0104] μ is the friction coefficient between the first circular slitting knife 220 or the second circular slitting knife 320 and the copper strip.

[0105] k2 is an empirical adjustment factor, which comprehensively reflects actual factors such as equipment conditions, cutting edge accuracy, and load sensitivity, and is the target factor we want to derive.

[0106] The specific derivation process of the empirical adjustment factor k2 is as follows:

[0107] First, parameter collection, select actual engineering materials and measured coincidence amounts. Typical materials such as copper foil and aluminum foil can be selected, relevant parameters can be obtained through experiments or industry literature, and the minimum coincidence amount P that can achieve tear-free shearing is recorded exp .

[0108]

[0109]

[0110] Then, substitute into the formula to solve for k2 inversely.

[0111] Substitute each group of data into the formula:

[0112] Example (taking electrolytic copper as an example): t = 0.03mm, σ s = 210MPa, E = 110000MPa, μ = 0.2, P exp = 0.036.

[0113] Calculation:

[0114] All calculation results are as described in the following table:

[0115] Material <![CDATA[k2]]> Soft copper 1.172 Hard copper 1.212 Aluminum foil 1.185

[0116] Next, through fitting and regularization, a recommended range is established. Fitting analysis is performed on the above samples, and the empirical value distribution range is obtained: the minimum value is 1.172, the maximum value is 1.212, the average value is 1.192, and the standard deviation is ±0.015. Therefore, the range of the empirical adjustment factor k2 is k2 = 1.15 - 1.25 (recommended default: 1.20).

[0117] The coincidence value P adopts The reason for this formula is as follows:

[0118] The coincidence amount P of the blade needs to meet the following three points:

[0119] (1) It must cover the material thickness (P ≥ t), because the thickness t of the copper foil determines the minimum geometric length of the fracture path. If P < t, it will not be possible to ensure that the shear zone is completely penetrated, and tearing and non-breaking are very likely to occur.

[0120] (2) It must overcome the friction and strength resistance. In the shearing process, in addition to deforming the copper foil by pressing in, it is also necessary to overcome: the shear strength σ of the copper foil itself s ; the friction between the blade and the copper foil (determined by μ); the rigidity of material deformation (determined by E). These resistances together determine that the blade must further exceed the coincidence depth of the thickness to ensure shearing.

[0121] (3) It must accommodate the factors of equipment and tool changes. Even if the calculated P value is reasonable under ideal conditions, in practice, due to uncertain factors such as blade sharpness, assembly accuracy, and material fluctuations, P still needs to retain a certain safety margin, which is the role of k2.

[0122] Therefore, on the basis of meeting the basic geometric thickness t, the material resistance and friction energy terms are introduced, and then adjusted by k2 to make it have general adaptability to construct the above formula for calculating the coincidence value.

[0123] The internal relationship of the coincidence value P formula. From the formula structure, each term has a clear physical and logical meaning. t provides the minimum shear path, μ·σ s reflects the shear slip resistance of the blade contact surface, E reflects the deformation rigidity of the material, the harder it is, the more difficult it is to cut in, μ·σ s / E is the shear resistance coefficient, indicating the effect of friction and strength relative to the material stiffness, (1 + μ·σ s / E): represents the excess cutting ratio required compared to the thickness, and k2 controls the correction term for actual environmental errors (such as tool wear, material burrs, eccentricity, etc.).

[0124] All of the above variables are measurable or estimable, the tool depth can be adjusted in real time, and if other factors (such as temperature, lubrication state) are introduced, they can be absorbed in k2.

[0125] The benefits of using the coincidence value P formula. By using this formula to replace the fixed empirical value P = 1.2·t and other methods, the following substantial improvements are brought in engineering applications:

[0126] The shear integrity is improved. For copper foils of different batches, different hardnesses, and different lubrication states, the coincidence amount can be dynamically adjusted to avoid incomplete cutting or over - cutting.

[0127] The edge quality is better. A reasonable clearance fit can effectively avoid defects such as tearing, knife hanging, and burrs, improve the edge quality of the copper foil strip, and meet the high - end requirements of batteries, circuit boards, etc.

[0128] The tool life is extended. An excessive coincidence amount will cause excessive extrusion between the tool and the tool, and between the tool and the material;

[0129] A reasonably set P value can reduce the friction power consumption while ensuring penetration, and reduce the tool wear rate.

[0130] Furthermore, in the scenario of equipment automation, this formula can be embedded in the system to automatically calculate and set the tool stroke according to the material parameters, reduce manual intervention, and improve stability and consistency.

[0131] In summary, the adoption of the above - mentioned coincidence value P formula is based on the real physical mechanism of the shear behavior of materials mechanics, and has a clear logical structure, engineering adaptability, and practical effect improvement value.

[0132] In order to further optimize the shear structure parameters in the copper strip slitting device to improve the slitting quality and adapt to different types of copper strip materials, in some embodiments, in this embodiment, the edge of the first circular slitting knife 220 facing the installation plane 110 forms a preset coincidence relationship with the edge of the second circular slitting knife 320 away from the installation plane 110 in the vertical direction. The coincidence value is set to a moderately enlarged multiple of the copper strip thickness, so that the first circular slitting knife 220 and the second circular slitting knife 320 can achieve a sufficient cutting depth during the shearing process, thereby ensuring that the copper strip is cut through and the cross - section is clear. And, the coincidence value between the edge of the first circular slitting knife 220 facing the installation plane 110 and the edge of the second circular slitting knife 320 away from the installation plane 110 is between 1.1 times and 1.3 times the copper strip thickness. The shear gap is between 0.08 times and 0.12 times the copper strip thickness.

[0133] To further ensure that the shear stress is concentrated in a reasonable area and reduce the phenomenon of material cracking or tearing at the edges, in this embodiment, the shear gap between the first circular cutting knife 220 and the adjacent second circular cutting knife 320 is defined to be less than a set proportion of the thickness of the copper strip. The principle of setting this gap is to control the stress-bearing area of the copper strip to approach the edge of the blade when it enters the shear channel, so that the shear load is concentrated at the intersection of the blades, and to promote the formation of a stable plastic shear zone in this area of the copper strip, so as to quickly break, and avoid the stretching or flanging effect of the material in the wide-width direction.

[0134] In this embodiment, both the shear gap and the overlap value can be finely adjusted through a preset adjustment structure. For example, the setting can be completed by replacing the blade spacer ring, adjusting the height of the rotating shaft mechanism or an automatic adjustment device. In actual use, different types and different thicknesses of copper strips can automatically call the corresponding parameters through the material database, enabling the device to have the ability to adapt to the material properties. In addition, the control system can also integrate a sensing feedback module to correct the shear gap or overlap value in real time according to the change of the shear stress state, realizing closed-loop precision control.

[0135] In this embodiment, due to the adoption of the technical means of matching the shear gap set based on the thickness of the copper strip with the blade overlap value, the shear structure can form a stable shear stress concentration area according to the thickness of the copper strip and the mechanical response characteristics during the actual processing. Therefore, it effectively solves the problems of cutting through failure, edge burrs, material tearing and other cutting quality problems caused by insufficient cutting depth or shear gap deviation in the prior art, and further realizes the technical effects of a flat cutting section, strong adaptability, small tool wear, and stable operation of the equipment.

[0136] To improve the structural adjustment ability and adaptability of the copper strip cutting device, in some embodiments, refer to Figure 1 , the cutting device further includes an adjustment bracket 40. The adjustment bracket 40 includes a mounting frame 410 and an adjustment component 430. The mounting frame 410 is arranged at the mounting plane 110. A second bearing 420 is installed in the mounting frame 410. The second rotating shaft 310 is connected to the mounting frame 410 through the second bearing 420. The adjustment component 430 is controlled to move in a direction close to or away from the mounting frame 410. A first bearing 440 is installed in the adjustment bracket. The first rotating shaft 210 is connected to the adjustment bracket through the first bearing 440. The adjustment bracket 40 is constructed as a combined structure of the mounting frame 410 and the adjustment component 430, and is used for controllably adjusting the relative position relationship between the upper and lower cutting components to achieve precise matching of the shear gap and the blade overlap amount.

[0137] Specifically:

[0138] The mounting bracket 410 is fixedly arranged at the mounting plane 110 of the workbench 10, and mainly plays the roles of support and reference positioning. A second bearing 420 is installed in the mounting bracket 410. This bearing is used to support the second rotating shaft 310, so that the circular cutting knife of the second cutting assembly 30 can rotate stably around its axis. The second bearing 420 is preferably a deep groove ball bearing or a cylindrical roller bearing with good rotational accuracy and radial load-bearing capacity, which can effectively ensure the coaxiality and rotational stability of the second rotating shaft 310 during operation.

[0139] The adjusting assembly 430 is arranged on one side of the mounting bracket 410 and is used to drive the adjusting frame to move controllably in a direction close to or away from the mounting bracket 410, so as to realize the vertical adjustment of the first rotating shaft 210. The adjusting assembly 430 can adopt a lead screw mechanism, a servo slide table or a wedge-type lifting structure, and is driven by an electric or manual method to realize high-precision displacement adjustment. A first bearing 440 is provided in the adjusting frame, and the first rotating shaft 210 is rotationally connected to the adjusting frame through the first bearing 440, so that the rotating tool of the first cutting assembly 20 always maintains a stable support state during the adjustment process.

[0140] In the above structure, by driving the overall movement of the adjusting frame through the adjusting assembly 430, a slight offset of the axis of the first rotating shaft 210 in the vertical direction can be realized, and further, the coincidence value and the shearing gap between the first circular cutting knife 220 and the second circular cutting knife 320 can be changed. When the material is replaced or the tool is worn, the system can finely adjust the adjusting assembly 430 automatically or manually, so that the shearing area maintains stress concentration and a complete cross-section, ensuring long-term stable cutting quality.

[0141] The structure of the adjusting bracket 40 is applicable to a variety of installation conditions, and can be used not only for a horizontally arranged feeding structure, but also for a vertical or inclined cutting path device. According to the equipment space layout conditions, the installation direction of the adjusting assembly 430 can also be set horizontally, further improving the versatility of the device and the on-site adaptation ability.

[0142] In addition, in other alternative embodiments, the adjusting assembly 430 can also be integrated with a position sensor, an encoder or a displacement detection module, which is used to feedback the position state of the first rotating shaft 210 and is linked with the control system to realize the closed-loop control of the shearing gap and the coincidence amount.

[0143] In this embodiment, due to the technical means of the adjusting bracket 40 including the mounting bracket 410, the adjusting assembly 430 and the bearing support structure, the relative position between the upper and lower cutting assemblies can be adjusted controllably. Therefore, it effectively solves the problems of unstable shearing gap, incomplete shearing or burrs on the cross-section caused by tool installation errors, material thickness fluctuations or blade wear in the prior art, and further realizes the technical effects of controllable shearing accuracy, flexible structure adjustment, improved device adaptability and long-term stable cutting quality.

[0144] Further, in order to achieve fine adjustment of the position of the first rotating shaft 210 and high-stability support cooperation, in some embodiments, refer to Figure 1 , the adjusting assembly 430 includes a shaft seat 431, a bracket 432, a worm gear 433, an internally threaded tube 434, a threaded rod 435, and a worm 436, thus constituting a set of controllable adjustment transmission mechanisms, aiming to achieve the micro-movement of the first cutting assembly 20 and the precise setting of the shearing gap. The first bearing 440 is disposed within the shaft seat 431. The first rotating shaft 210 is connected to the shaft seat 431 through the first bearing 440. The bracket 432 is connected to the mounting frame 410. The worm gear 433 is rotatably connected to the bracket 432. A through groove is axially formed through the center of the worm gear 433 along its own axis. The internally threaded tube 434 is disposed within the through groove. The threaded rod 435 is threadedly connected to the internally threaded tube 434, and one end of the threaded rod 435 extends outside the internally threaded tube 434. The end of the threaded rod 435 located outside the internally threaded tube 434 is connected to the shaft seat 431, so that the shaft seat 431 moves with the threaded rod 435. The worm 436 is rotatably connected to the bracket 432, and the worm 436 meshes with the worm gear 433.

[0145] Specifically:

[0146] The first bearing 440 is disposed inside the shaft seat 431. The shaft seat 431 is used for providing rotary support for the first rotating shaft 210. Its shape can be a hollow cylindrical shape. The inner cavity is provided with a limiting flange and a bearing positioning groove for fixing the first bearing 440 and ensuring the stability of the axis of the rotating shaft. The first rotating shaft 210 is connected to the shaft seat 431 through the first bearing 440, thereby realizing the load-bearing and rotational transmission of the first circular cutting knife 220 group.

[0147] The bracket 432 is fixedly arranged on the mounting frame 410, and is used for providing a rigid reference surface for the adjustment transmission system. Axial through holes and bearing chambers for installing the worm gear 433 and the worm 436 are provided thereon. The worm gear 433 is rotatably connected to the bracket 432 through a rotating shaft assembly. A through groove is axially formed through the center of the worm gear 433 along its own axis for accommodating the internally threaded tube 434. The internally threaded tube 434 is installed in the through groove and is threadedly connected to a threaded rod 435. This threaded structure is a standard screw pair structure, which can convert rotational motion into linear displacement.

[0148] One end of the threaded rod 435 extends to the outside of the internal threaded tube 434 and is connected to the shaft seat 431, and the other end is fixed to the through hole of the worm gear 433 or is provided with a limit retaining ring to limit its axial escape. When the worm gear 433 is driven to rotate, the internal threaded tube 434 rotates accordingly, so that the threaded rod 435 moves forward and backward in a straight line along its axial direction, and drives the shaft seat 431 connected thereto to move up and down, thereby adjusting the vertical position of the first rotating shaft 210.

[0149] The worm 436 is rotatably connected to the bracket 432, and its tooth surface is meshed with the gear ring of the worm wheel 433. During operation, the worm 436 is rotated manually or controlled by a servo motor to drive the worm wheel 433 to rotate around its own axis, thereby realizing the reduction transmission and micro-displacement output of the entire adjustment mechanism. Since the worm 436 and the worm wheel 433 have a self-locking characteristic, the adjustment state can be kept stable at any position without being disturbed by the tool load or vibration.

[0150] The adjustment component 430 has a compact structure and stable transmission, and can achieve precise adjustment in a small space. It is suitable for high-precision copper strip slitting scenarios and can also be expanded to various metal strip processing equipment of different specifications. Its structure can adopt a standardized module design to facilitate maintenance and replacement; key components such as the worm 436 and the worm wheel 433 can be made of wear-resistant alloy steel, and the internal threaded tube 434 and the threaded rod 435 can be surface-coated to increase the service life.

[0151] In this embodiment, due to the technical means of the composite transmission adjustment component 430 composed of the shaft seat 431, the bracket 432, the worm gear 433, the internal threaded tube 434, the threaded rod 435 and the worm 436, the position of the first rotating shaft 210 can be linearly fine-tuned through the rotation input and maintain a stable state at any adjustment position. Therefore, the problems of the prior art such as the difficulty in adjusting the shear gap and the inconsistent shear quality caused by insufficient adjustment accuracy, loose transmission structure or large repeated positioning errors are effectively solved, thereby achieving the technical effects of refined shear parameter adjustment, stabilized operation process and enhanced equipment applicability.

[0152] In some embodiments, see Figures 1 - 2In order to further improve the synchronization of the operation of the upper and lower slitting components in the copper strip slitting device and the stability of power transmission, the slitting device also includes a driving mechanism 50, the driving mechanism 50 includes a driver 510 and a transmission assembly 520, the driver 510 includes an output shaft with controlled rotation, the transmission assembly 520 includes an input end 521 and two output ends 522, the transmission assembly 520 is configured so that when the input end 521 rotates, the two output ends 522 rotate synchronously, and the two output ends 522 are respectively connected to the first rotating shaft 210 and the second rotating shaft 310 for driving the first rotating shaft 210 and the second rotating shaft 310 to rotate synchronously. The driving mechanism 50 is constructed as a combination of the driver 510 and the transmission assembly 520, which is used to simultaneously drive the first rotating shaft 210 and the second rotating shaft 310 to rotate synchronously, thereby ensuring that the upper and lower circular slitting knives form a continuous and consistent shearing matching relationship during the slitting process.

[0153] Specific:

[0154] The driver 510 is arranged on one side of the workbench 10, and an output shaft is integrated therein. The output shaft is a controlled rotation structure, usually driven by a servo motor or a stepper motor, and has precise speed adjustment and response capabilities. The driver 510 can output stable rotation power in real time according to the feeding speed or shearing beat set by the system through an internal control unit.

[0155] The output shaft is connected to the input end 521 of the transmission assembly 520, and the transmission assembly 520 is used to convert the single rotational motion from the output shaft of the driver 510 into two synchronous outputs in the same direction. The transmission assembly 520 can adopt a differential gear set, a parallel gear box or a synchronous pulley structure, and includes an input shaft and two output shafts inside. The input shaft is connected to the output shaft of the driver 510, and the two output shafts extend to the positions of the first rotating shaft 210 and the second rotating shaft 310 respectively, and are connected to them through couplings, sprockets, synchronous belts, etc.

[0156] When the output shaft of the driver 510 rotates, the input end 521 of the transmission assembly 520 rotates accordingly, and the internal transmission mechanism evenly distributes the rotation to the two output ends 522, so that the first rotating shaft 210 and the second rotating shaft 310 obtain synchronous power input. Since the output end 522 has a symmetrical structure, the transmission path is of equal length, and each connecting member is designed to be low inertia and low gap, the upper and lower slitting assemblies can be operated with high synchronization, thereby ensuring that the tangents of the first circular slitting blade 220 and the second circular slitting blade 320 coincide and the cutting rhythm is consistent.

[0157] The driving mechanism 50 is compact in structure and high in transmission efficiency, and is suitable for the process environment of continuous coil feeding and constant-speed shearing. When the equipment is installed, the transmission component 520 can be fixed under or laterally to the workbench 10, and the position of the output shaft can be flexibly adjusted according to the space layout. To improve the operation stability and transmission life of the equipment, rolling bearings can be arranged on each rotating shaft in the transmission component 520 for support, and a lubrication and sealing mechanism can be configured to ensure the smoothness under long-term operation conditions.

[0158] In other embodiments, the driver 510 can also integrate signal modules such as an encoder and a tachometer, which are used to collect rotational speed information and feedback it to the control system to achieve functions such as automatic rotational speed adjustment and shearing step pitch matching; the transmission component 520 can also be provided with a clutch or a synchronous adjustment structure to facilitate the individual detection of a certain knife group or the execution of a trial cutting operation.

[0159] In this embodiment, due to the technical means of the driving mechanism 50 composed of the driver 510 and the dual-output transmission component 520, the upper and lower rotating shafts can achieve synchronous rotation under the action of the same driving source. Therefore, the technical problems such as shearing misalignment, tangent line offset, and uneven fracture caused by independent driving or asynchronous power of the upper and lower tool shafts in the prior art are effectively solved, and further the technical effects of unified shearing rhythm, consistent slitting quality, high structural integration degree, and improved equipment operation efficiency are achieved.

[0160] In order to achieve precise adjustment of the position of the first slitting component 20 in the slitting device and further improve the matching accuracy of shearing parameters and the structural versatility, in some embodiments, the slitting device further includes a first linear guide rail 60, a first slider 70, a first screw sleeve 80, and a first lead screw 90. Among them, the first linear guide rail 60 is arranged at the installation plane 110, the first slider 70 is slidably connected to the first linear guide rail 60, the mounting bracket 410 is arranged on the first slider 70, the first screw sleeve 80 is connected to the first slider 70, the first lead screw 90 is restricted to rotate controllably around its own axis, and the first lead screw 90 is threadedly connected to the first screw sleeve 80.

[0161] Specifically:

[0162] The first linear guide rail 60 is fixedly arranged on the installation plane 110 of the workbench 10 and extends in the horizontal direction, serving as the horizontal movement reference track of the first slitting component 20. The guide rail can adopt a rectangular roller type or a ball type structure, and its surface is processed with high precision and quenched to ensure that the guide rail has high straightness, wear resistance, and load-bearing capacity.

[0163] The first slider 70 is slidably connected to the first linear guide 60. A guiding groove is provided at its bottom, which meshes and cooperates with the guide rail, enabling smooth and gapless linear movement in the axial direction of the guide rail. The mounting bracket 410 is installed on the upper surface of the slider, which is the structural basic unit for supporting the second rotating shaft 310 and the second slitting assembly 30. Therefore, the movement of the first slider 70 directly drives the entire second slitting assembly 30 to move synchronously in the horizontal direction.

[0164] To achieve precise adjustment of the position of the first slider 70, the first screw sleeve 80 is connected to the first slider 70. The screw sleeve has an internal thread structure and is threadedly connected to the first lead screw 90, forming a standard screw pair structure. The first lead screw 90 is set to a controlled rotation state, and its two ends can be supported by bearings and limited by bearing seats, and it rotates around its own axis without axial displacement.

[0165] When the first lead screw 90 rotates driven by a driving device (such as a handwheel, a motor, a servo module), the screw pair cooperation between the screw sleeve and the lead screw converts the rotational motion into a linear motion, thereby driving the first slider 70 connected to the screw sleeve to slide along the first linear guide 60, realizing precise adjustment of the mounting bracket 410 and the carried second slitting assembly 30 in the horizontal direction.

[0166] This structure has the characteristics of simple operation, high adjustment precision, and stable locking. It can achieve micron-level horizontal position adjustment and is applicable to scenarios such as fine adjustment of tool spacing, eccentricity error compensation, and width setting and centering control during the slitting process of copper strips of various specifications. To further improve the stability of the equipment, the first lead screw 90 can be configured with an axial preloading structure or double-bearing positioning to avoid radial swing of the screw rod under high load or frequent adjustment.

[0167] In addition, in other embodiments, the first lead screw 90 can be connected to an encoder or a displacement sensor to obtain the slider position in real time and feedback it to the control system to achieve position closed-loop adjustment. It can also achieve automatic fine adjustment through the servo control mode, meeting the dual requirements of high-end copper strip slitting equipment for adjustment speed and repeatability accuracy.

[0168] In this embodiment, due to the adoption of the technical means of the linear adjustment structure including the first linear guide 60, the first slider 70, the first screw sleeve 80, and the first lead screw 90, the second slitting assembly 30 can achieve controllable and precise displacement in the horizontal direction on the installation plane 110. Therefore, it effectively solves the problems in the prior art such as difficult adjustment of tool spacing, insufficient horizontal offset compensation, or insufficient structural rigidity, resulting in misalignment of the slitting position, tangent offset, or complex operation. Furthermore, it achieves the technical effects of simple tool centering adjustment, improved shearing accuracy, enhanced equipment adaptability, and increased operation efficiency.

[0169] In some embodiments, refer to Figure 2, in order to effectively limit and stably guide the conveying position of the copper strip on the slitting path to ensure that the copper strip always maintains an ideal shearing track when passing between the upper and lower slitting knives, the slitting device further includes a limit guiding mechanism 100, which is arranged at the installation plane 110. The limit guiding mechanism 100 includes a second linear guide rail 1010, two second sliders 1020, two groups of pulleys 1030 and a driving member 1040. Among them, the second linear guide rail 1010 is arranged on the installation plane 110, and the two second sliders 1020 are both slidably connected to the second linear guide rail 1010. The two groups of pulleys 1030 are arranged on the two second sliders 1020 in a one-to-one correspondence. The driving member 1040 is connected to the two second sliders 1020, and the driving member 1040 is configured to controllably drive the two second sliders 1020 to move relatively or away from each other synchronously, and the moving direction of the second slider 1020 is parallel to the axis of the first rotating shaft 210. The limit guiding mechanism 100 is used to dynamically constrain the lateral position of the copper strip without interfering with the forward direction of the copper strip and adapt to the guiding requirements of copper strips of different widths.

[0170] Specifically:

[0171] The limit guiding mechanism 100 is arranged at the installation plane 110, and it includes a second linear guide rail 1010, two second sliders 1020, two groups of pulleys 1030 and a driving member 1040. The second linear guide rail 1010 is arranged along the axial direction of the first rotating shaft 210 and is fixedly installed on the installation plane 110 of the workbench 10, serving as the guiding basis for the linear movement of the two second sliders 1020. The guide rail body can be made of an integrated precision aluminum alloy material or a hardened steel structure, and its outer surface is provided with rolling grooves or precision guide rail surfaces to adapt to various standard sliders.

[0172] The two second sliders 1020 are respectively slidably connected to the second linear guide rail 1010 and can move smoothly and symmetrically along the axial direction on the guide rail. A group of pulleys 1030 is arranged on each slider, and the structures of the two groups of pulleys 1030 correspond to each other and are respectively located on both sides of the copper strip conveying path. The pulleys 1030 are made of low-friction materials, usually polyurethane or nylon. The wheel shafts are installed on the upper parts of the sliders, which can provide elastic lateral support for the edges of the copper strip to prevent the copper strip from undergoing lateral displacement, torsion or deviation.

[0173] To achieve synchronous adjustment between two sliders, the driving member 1040 is arranged at the slider connection end to simultaneously control the relative or opposite movement of the two sliders along the guide rail direction. The driving member 1040 can be composed of a lead screw pair, a synchronous pulley pair or a rack and pinion structure. Its input end 521 is connected to a handwheel, a motor or a control system, and the output ends 522 are respectively fixedly connected to the two sliders. When the driving member 1040 acts, the two sliders move symmetrically on the guide rail, thereby adjusting the lateral distance between the guiding pulleys 1030 to adapt to the copper strip conveying requirements of different widths.

[0174] During the operation of the device, the limit guiding mechanism 100 forms a flexible and adjustable copper strip boundary channel, which neither affects the advancement of the copper strip nor provides automatic reset guidance when the copper strip drifts slightly laterally, effectively improving the stability of the cutting path. This mechanism is applicable to copper strip materials of different widths and different hardnesses, especially applicable to the working conditions with high requirements for shearing quality and track stability in the scenarios of high linear speed and large batch continuous operation.

[0175] In other alternative embodiments, position encoders can be provided on the sliders to detect the actual positions of the sliders and feedback them to the control system for automatic adjustment; the pulley 1030 can adopt an elastic eccentric wheel structure to enhance the flexible wrapping ability of the copper strip and adapt to a certain degree of material deformation; the driving member 1040 can also be provided with a quick unlocking structure to facilitate quick replacement of the copper strip specifications.

[0176] In this embodiment, due to the technical means of the limit guiding mechanism 100 including a linear guide rail, adjustable sliders, guiding pulleys 1030 and a synchronous driving member 1040, the conveying position of the copper strip in the cutting path can always be kept laterally stable during the operation of the equipment and can be quickly adaptively adjusted according to the width of the copper strip. Therefore, it effectively solves the quality problems such as shear skew, blade misalignment, and edge breakage caused by copper strip deviation, distortion or unstable conveying in the prior art, and further achieves the technical effects of accurate trajectory in the copper strip conveying process, improved cutting accuracy, enhanced equipment versatility and optimized operation efficiency.

[0177] What is described above in this specification is only an example of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the content of this specification of the present invention or exceed the scope defined by this claims, they should all belong to the protection scope of the present invention.

Claims

1. A copper strip slitting device, characterized in that: include: Workbench, including mounting surface; A first slitting assembly is arranged at the installation plane, wherein the first slitting assembly comprises a first rotating shaft for controlled rotation and a plurality of first circular slitting knives sleeved on the outer side of the first rotating shaft; A second slitting assembly is arranged at the installation plane, the second slitting assembly is located between the first slitting assembly and the installation plane, the second slitting assembly comprises a second rotating shaft that is controlled to rotate and a plurality of second circular slitting knives that are sleeved outside the second rotating shaft, the second rotating shaft rotates synchronously with the second rotating shaft, and the axis of the second rotating shaft and the axis of the first rotating shaft are both located in a first plane, the first plane is perpendicular to the installation plane, and the second circular slitting knives are arranged in parallel with the first circular slitting knives; Among them, the edge of the first circular slitting knife 220 facing the mounting plane 110 overlaps with the edge of the second circular slitting knife 320 away from the mounting plane 110, and the overlap value is greater than the thickness of the copper strip, and the shear gap between the first circular slitting knife 220 and the adjacent second circular slitting knife 320 is configured to form a concentrated shear stress area when the copper strip passes through the slitting device.

2. A copper strip slitting device according to claim 1, characterized in that: The shear gap is obtained by the following formula: in: C is the shear gap; t is the thickness of the copper strip; σ s is the shear strength of the copper strip; E is the elastic modulus of the copper strip material; k1 is the empirical adjustment factor.

3. A copper strip slitting device according to claim 1, characterized in that: The overlap value is obtained by the following formula: in: P is the coincidence value; μ is the friction coefficient between the first circular slitting blade or the second circular slitting blade and the copper strip; k2 is the empirical adjustment factor.

4. A copper strip slitting device according to claim 2, characterized in that: The overlap value of the edge of the first circular slitting knife facing the mounting plane and the edge of the second circular slitting knife away from the mounting plane is between 1.1 times and 1.3 times the thickness of the copper strip.

5. A copper strip slitting device according to claim 3, characterized in that: The shear gap is between 0.08 and 0.12 times the thickness of the copper strip.

6. A copper strip slitting device according to claim 1, characterized in that: Also included is an adjustment bracket, the adjustment bracket comprising: A mounting frame, arranged at the mounting plane, wherein a second bearing is installed in the mounting frame, and the second rotating shaft is connected to the mounting frame through the second bearing; The adjusting component is controlled to move toward or away from the mounting frame. A first bearing is installed in the adjusting frame, and the first rotating shaft is connected to the adjusting frame through the first bearing.

7. A copper strip slitting device according to claim 1, characterized in that: The adjustment component comprises: A shaft seat, wherein the first bearing is disposed in the shaft seat, and the first rotating shaft is connected to the shaft seat through the first bearing; A bracket connected to the mounting frame; A worm wheel is rotatably connected to the bracket, and a through groove is provided at the axis of the worm wheel along its axial direction; An internally threaded pipe, disposed in the through groove; A threaded rod, threadedly connected to the internal threaded tube, one end of the threaded rod extending to the outside of the internal threaded tube, and one end of the threaded rod located outside the internal threaded tube connected to the shaft seat, so that the shaft seat moves with the threaded rod; A worm is rotatably connected to the bracket, and the worm is meshed with the worm wheel.

8. A copper strip slitting device according to any one of claims 1 to 7, characterized in that: Also included is a driving mechanism, the driving mechanism comprising: a drive including an output shaft for controlled rotation; The transmission assembly includes an input end and two output ends. The transmission assembly is configured so that when the input end rotates, the two output ends rotate synchronously. The two output ends are respectively connected to the first rotating shaft and the second rotating shaft for transmission, so that the first rotating shaft and the second rotating shaft rotate synchronously.

9. The copper strip slitting device according to claim 1, characterized in that: Also includes: A first linear guide rail is arranged at the mounting plane; A first sliding block is slidably connected to the first linear guide rail, and the mounting frame is arranged on the first sliding block; A first screw sleeve connected to the first sliding block; The first lead screw is limited to controlled rotation around its own axis and is threadedly connected to the first sleeve.

10. A copper strip slitting device according to claim 1, characterized in that , also includes a limit guide mechanism, which is arranged at the installation plane, and the limit guide mechanism includes: A second linear guide rail is arranged on the mounting plane; Two second sliders, both of which are slidably connected to the second linear guide rail; Two sets of pulleys, the two sets of pulleys are arranged on the two second sliding blocks in a one-to-one correspondence; A driving member is connected to the two second sliders, and the driving member is configured to controllably drive the two second sliders to move synchronously relative to or opposite to each other, and the moving direction of the second sliders is parallel to the axis of the first rotating shaft.

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