A high-precision full-automatic slitting machine for metal strip

Abstract

The application belongs to the technical field of slitting machine, and particularly relates to a high-precision full-automatic metal strip slitting machine, which comprises a machine tool and a shearing roller installed on the machine tool. The shearing roller comprises an end roller, a roller body, a fastening inserting rod, a cutter disc installation module arranged in the roller body and a cutter disc fixing module fixed to the roller body through the cutter disc installation module. The end roller is provided with two end rollers which are symmetrically arranged at two ends of the roller body and fixedly connected with the roller body. The symmetrical double clamping arms and the engagement tooth of the circumferential locking seat are clamped and matched to realize the circumferential uniform locking of the cutter disc. When the fastening inserting rod is axially fed, the protruding part synchronously pushes the two clamping arms to be radially tightened, the eccentric torque of the traditional single-side limiting block clamping is eliminated, the wedge-shaped matching structure of the first side locking plate and the circumferential locking seat can drive the cutter disc body to be slightly moved in the main locking state, the thermal elongation error in the operation process of the shearing roller is accurately compensated, and the stable control of the width error of the slit narrow strip is realized.

Description

Technical Field

[0001] This invention belongs to the field of slitting machine technology, specifically a high-precision fully automatic slitting machine for metal strip. Background Technology

[0002] Metal strip slitting machines are core equipment in the field of metal rolling processing. They are mainly used to cut wide metal strips (such as stainless steel strips, silicon steel strips, copper and aluminum strips, power battery electrode sheets, etc.) into multiple narrow strips of a set width along the length direction. They are widely used in new energy vehicles, power transformers, consumer electronics, home appliance manufacturing and other fields.

[0003] The shearing roller is the core component of the slitting machine, and its structure directly determines the slitting accuracy. The existing mainstream shearing rollers are divided into two categories: one is the traditional spacer fixed-distance structure, which adjusts the distance between adjacent cutter discs by adding spacers of different thicknesses. When changing specifications, the spacers need to be disassembled and reassembled one by one, which is inefficient and prone to introducing assembly errors; the other is the spacerless quick-change structure developed in recent years, such as the patent with publication number CN120715280A. It sets a lifting plate on the inner wall of the shearing roller, and fixes the embedded block on the cutter disc by clamping it with a single-sided limiting block. The cutter disc can slide along the axial direction of the shearing roller to achieve quick change.

[0004] However, the above structure still has significant defects: First, the limiting block is clamped on one side, and the force is eccentric. After multiple sets of cutter discs are locked in series, axial cumulative error is likely to occur. When slitting thin strips, it is easy to cause uneven side clearance of each cutter disc and generate burrs. Second, the cutter disc spacing adjustment depends on manual adjustment and cannot achieve automatic equal arithmetic arrangement. When changing specifications, the positioning accuracy is poor and the efficiency is low. Third, the cutter disc is rigidly fixed after locking. During the shearing process, the shearing roller will generate thermal expansion of 0.03-0.08mm due to frictional heat. Moreover, the cumulative error generated during the assembly process cannot be compensated in the locked state. It is necessary to stop the machine, disassemble the cutter, and recalibrate, which seriously affects the production efficiency and slitting accuracy and makes it difficult to meet the slitting requirements of high-end thin strips.

[0005] Therefore, the present invention provides a high-precision fully automatic slitting machine for metal strips. Summary of the Invention

[0006] In order to overcome the shortcomings of the existing technology and solve the core problems of the shearing roller structure mentioned in the background technology, such as large cumulative error caused by single-sided clamping, low degree of automation of pitch adjustment, and inability to adapt to assembly cumulative error and thermal elongation error after locking.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a high-precision fully automatic slitting machine for metal strip, comprising a machine tool and a shearing roller mounted on the machine tool;

[0008] The shearing roller includes an end roller, a roller body, a fastening rod, a cutter head mounting module arranged in the roller body, and a cutter head fixing module fixed to the roller body via the cutter head mounting module.

[0009] Two end rollers are provided, symmetrically arranged at both ends of the roller body, and fixedly connected to the roller body;

[0010] The cutter head fixing module includes a cutter head body and a circumferential locking seat that supports the cutter head body. The inner side of the circumferential locking seat is provided with symmetrically arranged meshing teeth.

[0011] The cutter head mounting module includes a mounting base and two clamping arms. The two clamping arms are symmetrically arranged about the axis of the roller body, and both can be radially slidably connected in the mounting base.

[0012] The fastening rod is axially slidably connected in the roller body, and a raised part is provided on the fastening rod; when the fastening rod slides axially, the raised part abuts against and drives the two clamping arms to slide and deform radially outward, so that the clamping arms engage with the biting teeth and lock the cutter head fixing module on the roller body.

[0013] Preferably, the roller body is further provided with a traction arm assembly, which includes a plurality of traction arms;

[0014] A connecting shaft is provided on the outer side of the mounting base. The connecting shaft passes through the rotation axis of the traction arm, and the rotation axis of the traction arm coincides with the axis of the connecting shaft.

[0015] The traction arm assembly is used to drive several cutter head mounting modules to be adjusted at equal intervals along the roller body axis.

[0016] Preferably, the roller body is provided with a coarse adjustment groove and a mounting groove. The mounting groove is provided in the middle of the roller body, and two coarse adjustment grooves are provided and respectively arranged at both ends of the roller body.

[0017] The connecting shafts on several of the mounting bases are slidably connected to the coarse adjustment groove and the mounting groove, respectively;

[0018] When the number of cutter head mounting modules is odd, the mounting base and connecting shaft in the middle are set in the mounting slot, and the connecting shafts on the other mounting bases are slidably connected in the coarse adjustment slot.

[0019] Preferably, a connecting plate is fixedly connected to the middle of the mounting base, and a limiting shaft is fixedly connected to the connecting plate. The limiting shaft passes through the bottom center of two symmetrically arranged clamping arms, providing a limit for the radial sliding of the clamping arms.

[0020] The cutter head mounting module is also equipped with a support arm and a return spring. The support arm is fixed to the top of the limiting shaft, and the return spring is sleeved on the limiting shaft. The two ends of the return spring are respectively fixed between the support arm and the clamping arm for driving the clamping arm to return to its original position.

[0021] Preferably, a clearance groove is provided on the side plate of the mounting base, and a connecting rod is fixedly connected to the side of the clamping arm. The connecting rod is slidably connected in the clearance groove to limit the sliding trajectory of the clamping arm.

[0022] Preferably, the cutter head fixing module further includes a first side locking plate and a second side locking plate, the first side locking plate and the second side locking plate being respectively arranged at both ends of the circumferential locking seat;

[0023] The inner hole of the first side locking plate is wedge-shapedly engaged with the end face opposite to the circumferential locking seat;

[0024] The end face of the first side locking plate is provided with a plurality of set screw holes facing the circumferential locking seat, and the plurality of set screw holes are evenly distributed.

[0025] The cutter head body is sleeved on the surface of the circumferential locking seat, and the cutter head body is fixedly connected to the first side locking plate and the second side locking plate.

[0026] Preferably, the inclination angle between the first side locking plate and the wedge-shaped mating surface of the circumferential locking seat is 1° to 5°;

[0027] The set screw hole is fitted with a set screw, the end of which abuts against the end face of the circumferential locking seat to drive the circumferential locking seat to move slightly along the roller body axis to compensate for the cumulative error and thermal elongation error of the cutter head body.

[0028] Preferably, a flattening roller is also provided on the machine tool adjacent to the shearing roller;

[0029] The machine tool is fixedly connected to two base plates at intervals, and each base plate is equipped with a roller mounting seat for bearing shearing rollers and flattening rollers;

[0030] A feed plate is also fixedly connected to the roller mounting seat on the base plate.

[0031] Preferably, one end of the machine tool is fixedly connected to a feed guide rod, and the other end is fixedly connected to a discharge guide rod;

[0032] The feed guide rod is arranged adjacent to the shearing roller, and the discharge guide rod is arranged adjacent to the flattening roller.

[0033] Preferably, the fastening rod further includes a horizontal portion, which is axially slidably connected in the roller body to release the radial compression on the clamping arm during reset.

[0034] The beneficial effects of this invention are as follows:

[0035] 1. The high-precision fully automatic slitting machine for metal strip described in this invention achieves uniform circumferential locking of the cutter head through the engagement of symmetrically arranged double clamping arms and the meshing teeth of the circumferential locking seat. When the fastening rod is fed axially, the raised part simultaneously pushes the two clamping arms radially to tighten, eliminating the eccentric torque of the traditional single-sided limit block clamping. At the same time, the wedge-shaped engagement structure between the first side locking plate and the circumferential locking seat can drive the cutter head body to move slightly under the main locking state, accurately compensating for the thermal elongation error during the operation of the shearing roller. No machine stoppage or cutter disassembly calibration is required, achieving stable control of the narrow strip width error after slitting.

[0036] 2. The high-precision fully automatic slitting machine for metal strip described in this invention achieves automatic equal-arithmetic adjustment of the distance between the cutter heads through a parallelogram linkage mechanism composed of traction arm assemblies. When the distance adjustment drive source is started, the connecting shafts of all cutter head mounting modules slide synchronously along the coarse adjustment slide or mounting groove. The equidistant arrangement of the entire row of cutter heads can be completed in one action. With the design of automatic reset of the clamping arms driven by the return spring, there is no need to assemble the spacers one by one or manually move the cutter heads when changing specifications, which improves the efficiency of specification change and greatly simplifies the tool disassembly process. Attached Figure Description

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] Figure 1 This is a perspective view of the present invention;

[0039] Figure 2 This is a top view of the present invention;

[0040] Figure 3 This is a cross-sectional view at point AA in this invention;

[0041] Figure 4 yes Figure 3 Enlarged structural diagram at point a;

[0042] Figure 5 This is a diagram showing the assembly of the shearing roller and the cutter head fixing module in this invention;

[0043] Figure 6 This is a diagram showing the assembly of the cutter head mounting module, fastening rod, and traction arm assembly in this invention.

[0044] Figure 7 This is the first mating diagram of the cutter head mounting module and the fastening rod in this invention;

[0045] Figure 8 This is the second mating diagram of the cutter head mounting module and the fastening rod in this invention;

[0046] Figure 9 This is an exploded view of the cutter head fixing module in this invention;

[0047] Figure 10This is a perspective view of the roller body in this invention;

[0048] In the diagram: 11. Machine tool; 12. Base plate; 13. Feed plate; 14. Feed guide rod; 15. Discharge guide rod; 2. Roller mounting seat; 3. Shearing roller; 31. End roller; 32. Roller body; 321. Coarse adjustment groove; 322. Mounting groove; 33. Traction arm assembly; 34. Fastening rod; 341. Horizontal part; 342. Raised part; 35. Cutter head mounting module; 351. Mounting seat; 352. Clamping arm; 353. Support arm; 354. Connecting plate; 355. Limiting shaft; 356. Return spring; 357. Connecting shaft; 358. Clearance groove; 359. Connecting rod; 36. Drive shaft; 4. Flattening roller; 5. Cutter head fixing module; 51. First side locking plate; 52. Cutter head body; 53. Second side locking plate; 54. Circumferential locking seat; 541. Engaging teeth. Detailed Implementation

[0049] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0050] like Figures 1 to 10 As shown in the figure, a high-precision fully automatic slitting machine for metal strip according to an embodiment of the present invention includes a machine tool 11 and a shearing roller 3 mounted on the machine tool 11;

[0051] The shearing roller 3 includes an end roller 31, a roller body 32, a fastening rod 34, a cutter head mounting module 35 arranged in the roller body 32, and a cutter head fixing module 5 fixed to the roller body 32 via the cutter head mounting module 35.

[0052] Two end rollers 31 are provided, symmetrically arranged at both ends of the roller body 32, and fixedly connected to the roller body 32;

[0053] The cutter head fixing module 5 includes a cutter head body 52 and a circumferential locking seat 54 that supports the cutter head body 52. ​​The inner side of the circumferential locking seat 54 is provided with symmetrically arranged meshing teeth 541.

[0054] The cutter head mounting module 35 includes a mounting base 351 and two clamping arms 352. The two clamping arms 352 are symmetrically arranged about the axis of the roller body 32, and both can be radially slidably connected in the mounting base 351.

[0055] The fastening rod 34 is axially slidably connected in the roller body 32, and the fastening rod 34 is provided with a raised part 342; when the fastening rod 34 slides axially, the raised part 342 abuts against and drives the two clamping arms 352 to slide and deform radially outward, so that the clamping arms 352 engage with the biting teeth 541, and lock the cutter head fixing module 5 on the roller body 32.

[0056] In the existing technology, the shear roller 3 structure has the core problems of large cumulative error caused by single-sided clamping, low degree of automation of pitch adjustment, and inability to adapt to assembly cumulative error and thermal expansion error after locking.

[0057] Therefore, in one embodiment of the present invention, in the initial state, the horizontal portion 341 of the fastening rod 34 is located below the clamping arm 352, so that the clamping arm 352 is in a retracted state, which facilitates the insertion of the cutter head fixing module 5 into the roller body 32. When locking is required, the drive mechanism (such as a hydraulic cylinder or servo motor) pushes the drive shaft 36 shown in the drive diagram, so that the fastening rod 34 moves axially. The cam-shaped or wedge-shaped protrusion 342 on the fastening rod 34 gradually slides into the bottom of the two clamping arms 352. As the protrusion 342 goes deeper, The two clamping arms 352 are forced to slide outward radially and synchronously along the guide structure of the mounting base 351. The top of the clamping arms 352 expands and presses tightly against the meshing teeth 541 on the inner side of the circumferential locking seat 54. Since the two clamping arms 352 are symmetrically arranged about the axis of the roller body 32 and driven by the same fastening rod 34, a completely symmetrical radial tension force can be generated, so that the circumferential locking seat 54 is centered in the radial direction and is restricted by the tooth shape of the meshing teeth 541 in the circumferential direction, thereby realizing the gapless rigid connection between the cutter head fixing module 5 and the roller body 32.

[0058] Compared to the eccentric clamping using a single-sided limiting block in the prior art, in this embodiment, the symmetrically arranged double clamping arms 352 achieve uniform force locking in a 360° circumferential direction, eliminating the overturning moment generated by single-sided clamping and avoiding the axial cumulative positioning error generated when multiple cutter discs are connected in series. In addition, in this embodiment, through the snap-fit ​​engagement between the biting teeth 541 and the clamping arms 352, the radial tension force is directly converted into a circumferential locking force. During shearing, the huge torque borne by the cutter disc body 52 is directly transmitted to the roller body 32 by the biting teeth 541, avoiding the slippage phenomenon that occurs with traditional spacers or single-sided clamping, and ensuring the cutting accuracy.

[0059] like Figures 1 to 6 As shown, a traction arm assembly 33 is also provided inside the roller body 32, and the traction arm assembly 33 includes a plurality of traction arms.

[0060] A connecting shaft 357 is provided on the outer side of the mounting base 351. The connecting shaft 357 passes through the rotation axis of the traction arm, and the rotation axis of the traction arm coincides with the axis of the connecting shaft 357.

[0061] The traction arm assembly 33 is used to drive several cutter head mounting modules 35 to be adjusted at equal intervals along the axial direction of the roller body 32.

[0062] In this embodiment, the traction arm assembly 33 is composed of several traction arms connected in series via hinge shafts, forming a deformable parallelogram linkage mechanism. The connecting shaft 357 is not only the rotating shaft connecting the cutter head mounting module 35 to the roller body 32, but also the hinge node of the traction arm assembly 33. When a dedicated pitch adjustment drive source (not shown in the figure) drives the active arm of the traction arm assembly 33 to rotate, the entire parallelogram linkage mechanism deforms. Since the rotation axis of all traction arms coincides with the axis of the connecting shaft 357, and the linkage mechanism has the characteristic of equal-length transmission, the relative displacement of all connecting shafts 357 in the axial direction is strictly equal during the deformation process, ensuring that regardless of the traction arm assembly... Regardless of the angle to which the 33 moves, the axial spacing between each cutter head mounting module 35 always maintains the initially set proportional relationship. Through the pure mechanical linkage of the traction arm group 33, all cutter head bodies 52 are automatically and equidistantly arranged in one go, which improves the efficiency of changing specifications. In addition, the motion trajectory of the parallelogram linkage mechanism has high determinism, avoiding random errors caused by manual adjustment, ensuring the consistency of the spacing between the cutter head bodies 52 after each specification change, and meeting the stringent tolerance requirements of high-end thin strip for slitting width. At the same time, compared with the complex electrical control system that requires multiple independent servo motors to drive each cutter head body 52, the pure mechanical linkage structure in this embodiment only requires one drive source, reducing equipment costs and programming and debugging difficulty.

[0063] It should also be noted that, in this embodiment, the active arm of the traction arm assembly 33 can be configured as any traction arm, and considering that the arrangement of the drive source needs to avoid the installation range of the cutter head body 52, the outermost traction arm is preferred.

[0064] like Figures 1 to 5 , Figure 10 As shown, the roller body 32 is provided with a coarse adjustment groove 321 and a mounting groove 322. The mounting groove 322 is located in the middle of the roller body 32, and two coarse adjustment grooves 321 are provided and respectively arranged at both ends of the roller body 32.

[0065] The connecting shafts 357 on several of the mounting bases 351 are slidably connected in the coarse adjustment groove 321 and the mounting groove 322 respectively;

[0066] When the number of cutter head mounting modules 35 is odd, the middle mounting base 351 and connecting shaft 357 are set in the mounting groove 322, and the connecting shafts 357 on the other mounting bases 351 are slidably connected in the coarse adjustment groove 321.

[0067] In this embodiment, when the total number of cutter head mounting modules 35 is odd, the connecting shaft 357 on the central mounting seat 351 is limited to slide within the mounting groove 322 to establish the absolute symmetry center of the entire row of cutter heads. The connecting shafts 357 on the remaining mounting seats 351 are slidably connected to the two coarse adjustment grooves 321 respectively to ensure that when the traction arm assembly 33 moves, the central mounting seat 351 remains stationary, while the cutter head bodies 52 on both sides expand equidistantly from the center. By fixing the central cutter head within the mounting groove 322, a stable geometric reference point is provided for the entire row of cutter heads, effectively suppressing the cumulative error of the long-distance linkage mechanism at the transmission end and further improving the straightness of the entire row of cutter heads.

[0068] like Figures 1 to 8 As shown, a connecting plate 354 is fixedly connected to the middle of the mounting base 351, and a limiting shaft 355 is fixedly connected to the connecting plate 354. The limiting shaft 355 passes through the bottom center of two symmetrically arranged clamping arms 352, providing a limit for the radial sliding of the clamping arms 352.

[0069] The cutter head mounting module 35 is also provided with a support arm 353 and a return spring 356. The support arm 353 is fixedly connected to the top of the limiting shaft 355, and the return spring 356 is sleeved on the limiting shaft 355. The two ends of the return spring 356 are respectively fixedly connected between the support arm 353 and the clamping arm 352, and are used to drive the clamping arm 352 to return to its original position.

[0070] In this embodiment, the connecting plate 354 is fixedly connected to the middle of the mounting base 351, and the limiting shaft 355 is vertically fixedly connected to the connecting plate 354 and precisely passes through the center hole at the bottom of the two clamping arms 352, acting as a guide post to force the two clamping arms 352 to slide along the axis of the limiting shaft 355, preventing the clamping arms 352 from deflecting or jamming when sliding radially. The support arm 353 is fixedly connected to the top of the limiting shaft 355 to enhance the connection tightness between the clamping arms 352 and the circumferential locking seat 54, so that the cutter head fixing module 5 is always held in place during installation and locking. The return spring 356 is sleeved on the limiting shaft 355, and the elastic force of the return spring 356 continuously pulls the two clamping arms 352 towards the retraction direction. When the fastening rod 34 retracts, the return spring 356 releases energy, instantly causing the clamping arms 352 to disengage from the meshing of the biting teeth 541, providing unobstructed space for the disassembly or position adjustment of the cutter head fixing module 5.

[0071] The automatic reset function of the return spring 356 allows the clamping arm 352 to open immediately after the fastening rod 34 is loosened. This eliminates the need for operators to manually pry the cutter head, enabling free disassembly and replacement of the cutter head fixing module 5 and reducing downtime for tool replacement. The rigid constraint of the limit shaft 355 ensures that the two clamping arms 352 will not undergo relative displacement or deformation when subjected to huge shearing forces, guaranteeing the long-term reliability of the locked state.

[0072] like Figures 1 to 9 As shown, a clearance groove 358 is provided on the side plate of the mounting base 351, and a connecting rod 359 is fixedly connected to the side of the clamping arm 352. The connecting rod 359 is slidably connected in the clearance groove 358 to limit the sliding trajectory of the clamping arm 352.

[0073] In this embodiment, the clearance groove 358 on the side plate of the mounting base 351 and the connecting rod 359 on the side of the clamping arm 352 form a guide rail-slider type guide engagement. The connecting rod 359 passes through the clearance groove 358. When the clamping arm 352 slides radially under the drive of the fastening rod 34, the connecting rod 359 is forced to move within the path defined by the clearance groove 358. The geometry of the clearance groove 358 precisely controls the stroke of the two clamping arms 352, ensuring that during the tensioning process, the clamping surface at the top of the clamping arm 352 can fit the meshing teeth 541 of the circumferential locking seat 54 at the optimal angle and path, achieving surface contact rather than point contact.

[0074] Guided by the trajectory of the relief groove 358, the clamping arm 352 can achieve maximum contact area with the meshing teeth 541 at the moment of locking, efficiently converting the radial tension force into circumferential locking torque and preventing stress concentration-induced plastic deformation of the tooth surface. At the same time, the precise guide rail design avoids interference between the clamping arm 352 and the mounting base 351 or other components during movement, ensuring the smoothness of the mechanism's operation and the reliability of long-term operation. The cooperation between the connecting rod 359 and the relief groove 358 provides additional constraints on the clamping arm 352 in both the radial and circumferential directions, enhancing the vibration resistance of the entire cutter head mounting module 35 and effectively suppressing fretting wear generated during high-speed slitting.

[0075] like Figures 1 to 9 As shown, the cutter head fixing module 5 also includes a first side locking plate 51 and a second side locking plate 53, which are respectively arranged at both ends of the circumferential locking seat 54.

[0076] The inner hole of the first side locking plate 51 is wedge-shapedly engaged with the end face opposite to the circumferential locking seat 54;

[0077] The end face of the first side locking plate 51 is provided with a plurality of set screw holes facing the circumferential locking seat 54, and the plurality of set screw holes are evenly distributed.

[0078] The cutter head body 52 is sleeved on the surface of the circumferential locking seat 54, and the cutter head body 52 is fixedly connected to the first side locking plate 51 and the second side locking plate 53.

[0079] In this embodiment, the first side locking plate 51 and the second side locking plate 53 are rigidly connected to the cutter head body 52 by fasteners such as bolts (not shown in the figure) to form a whole, while the circumferential locking seat 54 is located at the center of this whole. The inner hole surface of the first side locking plate 51 is designed as a bevel, which forms a wedge fit with the bevel surface of the top surface of the circumferential locking seat 54. Multiple set screw holes are evenly distributed on the end face of the first side locking plate 51 for installing set screws (such as internal hexagonal set screws). When the set screws are tightened, the ends of the set screws push against the circumferential locking seat 54. The end face forces the cutter body 52 to produce a small axial displacement along the wedge-shaped mating surface. Since the wedge angle is very small (configured as 1°-5°), the small axial displacement will be amplified into a small axial movement of the cutter body 52 relative to the circumferential locking seat 54, thereby realizing the fine adjustment of the position of the cutter body 52 relative to the roller 32. Without loosening the clamping arm 352, the position of the cutter body 52 can be corrected in real time by fine adjusting the set screw, compensating for the side clearance change caused by thermal expansion or assembly error, and ensuring the cutting accuracy of long-term continuous production.

[0080] In addition, each cutter head fixing module 5 has an independent fine-tuning capability, which can individually correct individual cutter heads with deviations in the entire row of cutter heads without affecting the position of other cutter heads, thereby improving the process adaptability of the equipment. Through fine-tuning, it can ensure that the end faces of all cutter heads are on the same plane, avoiding problems such as strip scraping or incomplete slitting caused by individual cutter heads protruding or recessed, and reducing burr height.

[0081] like Figures 1 to 9 As shown, the inclination angle between the wedge-shaped mating surface of the first side locking plate 51 and the circumferential locking seat 54 is 1° to 5°.

[0082] The set screw hole is fitted with a set screw, the end of which abuts against the end face of the circumferential locking seat 54, which is used to drive the circumferential locking seat 54 to move slightly along the axial direction of the roller body 32 to compensate for the cumulative error and thermal elongation error of the cutter head body 52.

[0083] In this embodiment, the inclination angle of the wedge-shaped mating surface between the first side locking plate 51 and the circumferential locking seat 54 is limited to between 1° and 5°. When the inclination angle is less than 1°, although the self-locking performance is excellent, the fine-tuning sensitivity is too high, and the slight rotation of the set screw will cause excessive axial displacement, which is difficult to control. When the inclination angle is greater than 5°, the fine-tuning sensitivity decreases, and the self-locking performance of the wedge surface weakens. Under the action of huge shearing force, the circumferential locking seat 54 may spontaneously retract. The inclination angle range of 1°-5° ensures that the fine-tuning mechanism has good self-locking performance (the static friction angle is usually greater than 5°). In this embodiment, the inclination angle range is preferably 3°, so that the adjusted position can be maintained for a long time, and a suitable transmission ratio can be provided so that each rotation of the set screw corresponds to an axial displacement that is easy to control and measure. This ensures that the cutter head fixing module 5 will not loosen or displace when subjected to huge shearing loads, maintains the long-term stability of the accuracy after fine-tuning, and avoids the accuracy drift problem caused by dynamic factors such as thermal expansion.

[0084] like Figures 1 to 3 As shown, a flattening roller 4 is also provided on the machine tool 11 adjacent to the shearing roller 3;

[0085] Two base plates 12 are fixedly connected at intervals on the machine tool 11. Roller mounting seats 2 that support shearing rollers 3 and flattening rollers 4 are installed on both base plates 12.

[0086] A feed plate 13 is also fixedly connected to the bottom plate 12 adjacent to the roller mounting seat 2.

[0087] In this embodiment, the flattening roller 4 is arranged on the discharge side of the shearing roller 3, with its axis parallel to the axis of the shearing roller 3. The base plate 12 serves as the base of the entire equipment, supporting the shearing roller 3 and the flattening roller 4 respectively through the roller mounting seat 2, ensuring their parallelism and center distance. The feed plate 13 is installed on the base plate 12, located on the feed side of the roller mounting seat 2. Its surface is usually designed as a smooth arc or plane to guide the metal strip smoothly into the biting point of the shearing roller 3, preventing the strip head from sagging or deviating. The flattening roller 4 applies a certain wrap angle and pressure to the narrow strip after slitting, which can effectively eliminate plate shape defects such as wavy edges and warping generated during the slitting process, ensuring that the coiled strip is neatly and tightly wound. The guiding effect of the feed plate 13, combined with the positioning of the feed guide rod 14, ensures that the strip enters the shearing area in the correct posture, reducing accidents such as blade biting and chipping caused by incorrect feeding, and improving the stability and safety of equipment operation.

[0088] The unified design of the base plate 12 and roller mounting seat 2 ensures the relative positional accuracy of the shearing roller 3 and the flattening roller 4, avoids the cumulative error that may be caused by separate installation, and improves the rigidity of the whole machine.

[0089] like Figures 1 to 3As shown, one end of the machine tool 11 is fixedly connected to a feed guide rod 14, and the other end is fixedly connected to a discharge guide rod 15;

[0090] The feed guide rod 14 is arranged adjacent to the shearing roller 3, and the discharge guide rod 15 is arranged adjacent to the flattening roller 4.

[0091] In this embodiment, the feed guide rod 14 is located at the feed end of the machine tool 11, close to the shearing roller 3. Its function is to guide the operator or automated equipment to accurately feed the head of the strip into the gap between the cutter heads of the shearing roller 3 during the initial threading stage. The discharge guide rod 15 is located at the discharge end of the machine tool 11, close to the flattening roller 4. Its function is to guide the multiple narrow strips that have been cut to smoothly transition to the subsequent winding equipment or processing steps after the slitting is completed, preventing the narrow strips from tangling or deviating. With the help of the automated control system, the feed guide rod 14 and the discharge guide rod 15 can realize automatic threading and automatic centering of the strip without manual assistance, which significantly improves the automation level and safety of the production line.

[0092] like Figures 1 to 8 As shown, the fastening rod 34 also includes a horizontal part 341, which is axially slidably connected in the roller body 32 and is used to release the radial compression on the clamping arm 352 during reset.

[0093] In this embodiment, the horizontal portion 341 is a smooth cylindrical or planar segment on the fastening rod 34 adjacent to the raised portion 342. When the device needs to switch from a locked state to a released state for tool changing or pitch adjustment, the drive mechanism pulls the fastening rod 34 axially back. At this time, the raised portion 342 gradually disengages from its contact with the bottom of the clamping arm 352, while the horizontal portion 341 moves to the corresponding position at the bottom of the clamping arm 352. Since the outer diameter (or height) of the horizontal portion 341 is smaller than that of the raised portion 342, it provides sufficient space for the clamping arm 352 to retract. The reduced space allows the return spring 356 to pull the clamping arm 352 to close without obstruction. The design of the horizontal part 341 ensures that the fastening rod 34 will not exert any residual radial compressive force on the clamping arm 352 in the loosened state, ensuring that the clamping arm 352 can be fully reset, providing maximum unobstructed space for the movement or disassembly of the cutter head body 52. ​​In addition, during the loosening process, the horizontal part 341 does not contact or only slightly contacts the bottom of the clamping arm 352, reducing the friction force that the drive mechanism needs to overcome and extending the service life of the drive mechanism.

[0094] Working principle:

[0095] When performing the metal strip cutting operation, the wide metal coil is first placed on the uncoiler. After the strip head is uncoiled, it is guided by the feed rod 14 and then smoothly conveyed to the feed side of the shearing roller 3. At this time, the fastening rod 34 is in the fully retracted state, and its horizontal part 341 is directly opposite the bottom of the clamping arm 352. The reset spring 356 pulls the two symmetrically arranged clamping arms 352 into the retracted state, and the support arm 353 supports the subsequently installed cutter head fixing module 5.

[0096] Subsequently, the prefabricated cutter head fixing module 5 is inserted axially along the roller body 32; the support arm 353 supports the weight of the circumferential locking seat 54, ensuring that the cutter head assembly is in a horizontal position and avoiding tilting and jamming. If the total number of cutter heads is odd, the connecting shaft 357 of the middle mounting seat 351 is inserted into the mounting groove 322 in the middle of the roller body 32, serving as the absolute symmetry center of the entire row of cutter heads, and no axial displacement occurs. Then, the pitch adjustment drive source (servo motor or hydraulic motor) is started to drive the traction arm group 33 to move. The traction arm group 33 is a parallelogram linkage mechanism formed by multiple traction arms hinged together, which deforms. All connecting shafts 357 slide synchronously along the coarse adjustment slide grooves 321 at both ends of the roller body 32. Due to the equal length transmission characteristics of the parallelogram mechanism, the axial spacing of each cutter head mounting module 35 strictly maintains a proportional relationship, realizing one-time automatic coarse adjustment of the cutter head spacing.

[0097] After the adjustment is completed, the locking drive mechanism (such as a servo electric cylinder or hydraulic cylinder) is activated to push the fastening rod 34 axially forward. The raised part 342 on it gradually slides into the bottom of the two clamping arms 352. The wedge-shaped surface of the raised part 342 presses against the bottom of the clamping arm 352, overcoming the tension of the return spring 356, and forcing the two symmetrical clamping arms 352 to slide outward synchronously along the limiting shaft 355. At the same time, the connecting rod 359 on the side of the clamping arm 352 slides along the preset trajectory in the relief groove 358 of the side plate of the mounting base 351, ensuring that the top of the clamping arm 352 is always facing the biting tooth 541 on the inner side of the circumferential locking seat 54. When the top of the clamping arm 352 is fully expanded, it forms a tight toothed engagement with the biting tooth 541. The circumferential locking seat 54 is radially centered and circumferentially locked, finally realizing the gapless rigid connection between the cutter head fixing module 5 and the roller body 32.

[0098] It is worth noting that after coarse adjustment and locking, a trial cut can be performed first to measure the width and burr condition of the narrow strip after slitting. If there are cumulative assembly errors or accuracy deviations caused by the thermal elongation (0.03-0.08mm) of the shearing roller 3 during subsequent operation, there is no need to loosen the main locking structure. Fine adjustment can be made directly through the set screw on the first side locking plate 51. By tightening the set screw, the end of the set screw abuts against the end face of the circumferential locking seat 54, forcing the cutter head body 52 to generate a small axial position along its 1°-5° wedge-shaped mating surface with the circumferential locking seat 54. The transmission ratio of the wedge-shaped surface converts the rotational motion of the set screw into a micron-level axial micro-movement of the cutter head body 52, achieving a precision correction of ±0.005mm for a single cutter head body 52. ​​After adjustment, the self-locking characteristic of the set screw (the wedge angle is less than the steel-steel static friction angle) ensures that the adjusted position is stable for a long time and is not affected by shear vibration. Online error compensation can be achieved without disassembling the cutter or loosening the main locking structure, solving the problem of not being able to adapt to thermal expansion and assembly errors after locking, and avoiding the waste of downtime calibration time.

[0099] Subsequently, the main drive motor is started to drive the shearing roller 3 to rotate. The circumferential locking seat 54 drives the cutter body 52 to rotate synchronously through the snapping action of the meshing teeth 541. The cutter bodies 52 of the upper and lower sets of shearing rollers 3 cooperate to complete the strip cutting. During the cutting process, the rigid support of the symmetrical locking structure ensures that the cutter body 52 has no radial runout. The side clearance of each cutter after fine adjustment is uniform.

[0100] After being finally slit, the multiple narrow strips are guided by the discharge guide rod 15 and enter the gap between the rollers of the flattening roller 4. The flattening roller 4 applies appropriate wrap angle and pressure to the narrow strips to eliminate plate shape defects such as wavy edges and warping generated during the slit process. Then the narrow strips are conveyed to the winding mechanism for neat winding.

[0101] If the slitting specification needs to be changed, the reverse drive fastening rod 34 is axially retracted, the raised part 342 disengages from the bottom of the clamping arm 352, the return spring 356 pulls the clamping arm 352 to close, the clamping arm 352 disengages from the meshing teeth 541, and the cutter head fixing module 5 can be directly removed from the roller body 32; then the drive traction arm group 33 is activated to adjust all cutter head mounting modules 35 to the new spacing position, and the above main locking to fine adjustment process is repeated to complete the specification change.

[0102] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision fully automatic slitting machine for metal strip, characterized in that: Includes a machine tool (11) and a shearing roller (3) mounted on the machine tool (11); The shearing roller (3) includes an end roller (31), a roller body (32), a fastening rod (34), a cutter head mounting module (35) arranged in the roller body (32), and a cutter head fixing module (5) fixed to the roller body (32) by the cutter head mounting module (35). Two end rollers (31) are provided, symmetrically arranged at both ends of the roller body (32), and fixedly connected to the roller body (32); The cutter head fixing module (5) includes a cutter head body (52) and a circumferential locking seat (54) that carries the cutter head body (52). The inner side of the circumferential locking seat (54) is provided with symmetrically arranged meshing teeth (541). The cutter head mounting module (35) includes a mounting base (351) and two clamping arms (352). The two clamping arms (352) are symmetrically arranged about the axis of the roller body (32) and can be radially slidably connected in the mounting base (351). The fastening rod (34) is axially slidably connected in the roller body (32), and the fastening rod (34) is provided with a raised part (342); when the fastening rod (34) slides axially, the raised part (342) abuts against and drives the two clamping arms (352) to slide outward radially, so that the clamping arms (352) engage with the meshing teeth (541) to lock the cutter head fixing module (5) on the roller body (32).

2. The high-precision fully automatic slitting machine for metal strip according to claim 1, characterized in that: The roller body (32) is also provided with a traction arm assembly (33), which includes a plurality of traction arms; A connecting shaft (357) is provided on the outer side of the mounting base (351). The connecting shaft (357) passes through the rotation axis of the traction arm, and the rotation axis of the traction arm coincides with the axis of the connecting shaft (357). The traction arm assembly (33) is used to drive several cutter head mounting modules (35) to be adjusted equidistantly along the axial direction of the roller body (32).

3. The high-precision fully automatic slitting machine for metal strips according to claim 2, characterized in that: The roller body (32) is provided with a coarse adjustment groove (321) and a mounting groove (322). The mounting groove (322) is located in the middle of the roller body (32), and two coarse adjustment grooves (321) are provided and respectively arranged at both ends of the roller body (32). The connecting shafts (357) on several of the mounting bases (351) are slidably connected in the coarse adjustment groove (321) and the mounting groove (322); When the number of cutter head mounting modules (35) is odd, the middle mounting base (351) and connecting shaft (357) are set in the mounting groove (322), and the connecting shafts (357) on the other mounting bases (351) are slidably connected in the coarse adjustment groove (321).

4. The high-precision fully automatic slitting machine for metal strip according to claim 3, characterized in that: A connecting plate (354) is fixedly connected to the middle of the mounting base (351), and a limiting shaft (355) is fixedly connected to the connecting plate (354). The limiting shaft (355) passes through the bottom center of two symmetrically arranged clamping arms (352) to provide a limit for the radial sliding of the clamping arms (352). The cutter head mounting module (35) is also provided with a support arm (353) and a return spring (356). The support arm (353) is fixed to the top of the limiting shaft (355), and the return spring (356) is sleeved on the limiting shaft (355). The two ends of the return spring (356) are respectively fixed between the support arm (353) and the clamping arm (352) for driving the clamping arm (352) to return to its original position.

5. A high-precision fully automatic slitting machine for metal strips according to claim 4, characterized in that: The mounting base (351) has a clearance groove (358) on its side plate, and a connecting rod (359) is fixedly connected to the side of the clamping arm (352). The connecting rod (359) is slidably connected in the clearance groove (358) to limit the sliding trajectory of the clamping arm (352).

6. A high-precision fully automatic slitting machine for metal strips according to claim 5, characterized in that: The cutter head fixing module (5) also includes a first side locking plate (51) and a second side locking plate (53), which are respectively arranged at both ends of the circumferential locking seat (54); The inner hole of the first side locking plate (51) is wedge-shapedly engaged with the end face opposite to the circumferential locking seat (54); The end face of the first side locking plate (51) is provided with a plurality of set screw holes facing the circumferential locking seat (54), and the plurality of set screw holes are evenly distributed; The cutter head body (52) is sleeved on the surface of the circumferential locking seat (54), and the cutter head body (52) is fixedly connected to the first side locking plate (51) and the second side locking plate (53).

7. A high-precision fully automatic slitting machine for metal strips according to claim 6, characterized in that: The inclination angle of the wedge-shaped mating surface between the first side locking plate (51) and the circumferential locking seat (54) is 1° to 5°; The set screw hole is fitted with a set screw, the end of which abuts against the end face of the circumferential locking seat (54) to drive the circumferential locking seat (54) to move slightly along the roller body (32) axially, so as to compensate for the cumulative error and thermal elongation error of the cutter head body (52).

8. A high-precision fully automatic slitting machine for metal strips according to claim 7, characterized in that: The machine tool (11) is also provided with a flattening roller (4) adjacent to the shearing roller (3). Two base plates (12) are fixedly connected at intervals on the machine tool (11). Roller mounting seats (2) for carrying shearing rollers (3) and flattening rollers (4) are installed on both base plates (12). A feed plate (13) is also fixedly connected to the bottom plate (12) adjacent to the roller mounting seat (2).

9. A high-precision fully automatic slitting machine for metal strips according to claim 8, characterized in that: One end of the machine tool (11) is fixedly connected to a feed guide rod (14), and the other end is fixedly connected to a discharge guide rod (15). The feed guide rod (14) is arranged adjacent to the shearing roller (3), and the discharge guide rod (15) is arranged adjacent to the flattening roller (4).

10. A high-precision fully automatic slitting machine for metal strips according to claim 9, characterized in that: The fastening insert (34) also includes a horizontal part (341) which is axially slidably connected in the roller body (32) for releasing the radial compression of the clamping arm (352) during reset.

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