Strip edge trimming and breaking apparatus

Abstract

The application relates to a strip cutting and breaking device, which comprises a shearing unit, the shearing unit comprising a first knife part and a second knife part capable of relative movement; the first knife part is provided with at least one first shearing blade, and the second knife part is provided with at least one second shearing blade; the first shearing blade and the second shearing blade form a shearing pair when they are engaged with each other, the shearing pair comprises an axial blade part and a radial blade part which are matched with each other, the axial blade part extends along the length direction of the strip to perform longitudinal cutting, and the radial blade part extends along the width direction of the strip to perform transverse breaking. The application synchronously completes the actions of cutting and breaking in a single engagement of the same shearing pair, solves the problems that the continuous edge wire is prone to be stuck, broken and accumulated during operation, and causes the equipment to stop; meanwhile, the cutting and breaking are completed by the same device, and the problems of complex segmented device structure, large size and high maintenance cost are overcome.

Description

Technical Field

[0001] This invention relates to the field of metal rolling technology, and more specifically, to a strip trimming and breaking device. Background Technology

[0002] In the field of continuous strip finishing, edge trimming of rolled strip to eliminate defects and achieve a fixed width is an indispensable process.

[0003] In existing technologies, this process generally employs a segmented operation method using a disc shear and an independent shredder. Specifically, a disc shear first continuously shears the strip longitudinally along its running direction, creating continuous long strips of edge wire on both sides. These edge wires are then guided by a guide device to a downstream independent shredder, which separately shreds them laterally. Alternatively, an edge wire coiler can be used instead of a shredder to wind the continuous edge wires into coils for offline processing. However, continuous edge wires are prone to jamming, breakage, and accumulation during operation, causing equipment downtime. Furthermore, segmented equipment has a complex structure, large size, and high maintenance costs. Summary of the Invention

[0004] The problem solved by this invention is that continuous edge wires are prone to jamming, breakage, and accumulation during operation, causing equipment downtime; at the same time, segmented equipment has a complex structure, large size, and high maintenance costs.

[0005] To address the above problems, the present invention provides a strip cutting and breaking device.

[0006] A strip trimming and breaking device includes: a shearing unit, the shearing unit including a first blade component and a second blade component that can move relative to each other; the first blade component is provided with at least one first shearing blade, and the second blade component is provided with at least one second shearing blade; the first shearing blade and the second shearing blade form a shearing pair when they mesh with each other, the shearing pair including a cooperating axial blade portion and a radial blade portion, the axial blade portion extending along the length direction of the strip to perform longitudinal trimming, and the radial blade portion extending along the width direction of the strip to perform transverse breaking.

[0007] Preferably, the first cutting component is configured to rotate about its own axis, the second cutting component is configured to be fixed, and the rotation axis of the first cutting component coincides with the center line of the second cutting component.

[0008] Preferably, the first blade component has a ratchet-shaped body, and the first shearing blade is disposed on the outer peripheral surface of the ratchet-shaped body; the second blade component has a disc-shaped body, and the second shearing blade is disposed on the disc-shaped body.

[0009] Preferably, the first shearing blade is arranged obliquely on the outer peripheral surface of the ratchet-shaped body of the first blade component to form a progressive shear along the edge of the strip during rotation.

[0010] Preferably, there are multiple first shearing blades, which are evenly distributed along the circumference of the disc-shaped body; the length L of the broken edge material satisfies L=v / (n×m), where v is the running speed of the strip, n is the rotational speed of the first blade component, and m is the number of first shearing blades.

[0011] Preferably, the first cutting tool further includes a first motor, a rotating spindle, and a locking nut; the ratchet-shaped body is mounted on the rotating spindle, the first motor is connected to the rotating spindle for driving the rotating spindle to rotate around its own axis; the locking nut is screwed onto the end of the rotating spindle from the end away from the first motor to axially limit the ratchet-shaped body.

[0012] Preferably, the disc-shaped body is composed of a body portion and an end face protrusion detachably fixed to the body portion, and the second shearing blade is disposed on the end face protrusion; a height compensation shim is disposed between the end face protrusion and the body portion to compensate for the height change of the second shearing blade after grinding.

[0013] Preferably, the device further includes a movable base on which the shearing unit is mounted; the movable base is slidably mounted on a frame along the strip running direction.

[0014] Preferably, the device further includes a return spring disposed between the movable base and the frame, for applying an elastic force to the movable base to reset it in the opposite direction of the strip running direction.

[0015] Preferably, on each side of the strip running path, the two sets of shearing units are symmetrically arranged on a rotatable station switching frame. By rotating the station switching frame, one set can be selectively switched to an online working station, and the other set can be switched to an offline maintenance station.

[0016] The beneficial effects of the strip trimming and breaking device of the present invention are as follows: By setting up a first blade component and a second blade component that can move relative to each other, a basic motion framework is provided for the shearing action, enabling the two blade components to periodically approach each other and generate shearing force. Based on this, the first shearing blade and the second shearing blade form a shearing pair when engaged. This shearing pair is not a single-direction cutting edge, but includes mutually cooperating axial and radial cutting edges, thus forming a composite cutting edge shape in structure. Specifically, the axial cutting edge extends along the length direction of the strip, enabling it to longitudinally separate the strip edge from the body during the shearing process, completing the trimming action; the radial cutting edge extends along the width direction of the strip, enabling it to transversely cut the trimmed edge material in the same shearing stroke, completing the breaking action. The above structures work together to integrate the two actions—trimming and breaking—which originally had to be performed separately in traditional processes, into a single engagement of the same shearing pair and complete them synchronously. Therefore, the edge material separated from the strip body is cut into discrete fragments the instant it is generated, eliminating the generation of unstable intermediate products such as continuous edge wires from the process principle. This solves the problem that continuous edge wires are prone to jamming, breaking, and accumulating during operation, causing equipment downtime. At the same time, edge cutting and fragmentation are completed by the same equipment, overcoming the problems of complex structure, large size, and high maintenance cost of segmented equipment. Attached Figure Description

[0017] Figure 1 This is a top view schematic diagram of the strip cutting and breaking device of the present invention; Figure 2 for Figure 1 A schematic diagram of the shearing unit in the structure shown; Figure 3 for Figure 1 A cross-sectional view along the CC direction in the structure shown; Figure 4 for Figure 1 A front view of the structure shown along direction B; Figure 5 for Figure 4 An enlarged schematic diagram of the shearing unit in the structure shown; Figure 6 for Figure 5 A schematic diagram of the installation of the first shearing blade along direction A.

[0018] Explanation of reference numerals in the attached figures: 1. First cutter component; 2. Second cutter component; 3. First shearing blade; 4. Second shearing blade; 5. Disc-shaped body; 6. Disc-shaped body; 7. Body part; 8. End face protrusion; 9. Height compensation shim; 10. Frame; 11. Movable base; 12. Return spring; 13. Rotary spindle; 14. Station switching frame; 15. Locking nut; 16. First motor; 17. Idler roller; 18. Base; 19. Adjusting screw; 20. Second motor; 21. Strip material; d. Shearing gap; θ. Included angle. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0020] When coordinate axes are involved, the Z-axis in the attached diagram represents the vertical direction, i.e., up and down position, with the positive direction of the Z-axis representing up and the negative direction representing down; the X-axis in the attached diagram represents the horizontal direction and is specified as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back; the Y-axis in the attached diagram represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should also be noted that the aforementioned representations of the Z, Y, and X axes are only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0021] Where terminology is involved, the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0022] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0023] Example 1 This embodiment provides a strip trimming and crushing device for performing online trimming of strip 21 on a continuous production line of strip 21, and simultaneously crushing the trimmed edge waste. For example... Figures 1 to 6 As shown, the device includes at least one shearing unit, which includes a first blade component 1 and a second blade component 2 that can move relative to each other.

[0024] In this embodiment, the first cutting component 1 is provided with at least one first shearing blade 3. The term "first cutting component 1" refers to a member used to support and drive the movement of the first shearing blade 3. For example, the first cutting component 1 can be specifically implemented as a cutter disc capable of rotating about its own axis, in which case the first shearing blade 3 is arranged circumferentially along the cutter disc; correspondingly, the second cutting component 2 is provided with at least one second shearing blade 4. The second cutting component 2 is used to support the second shearing blade 4 and forms a relative motion relationship with the first cutting component 1. For example, when the first cutting component 1 is in the form of a rotating cutter disc, the second cutting component 2 can be a fixedly arranged annular member.

[0025] During operation, the first shearing blade 3 and the second shearing blade 4 form a shearing pair when they mesh with each other. "Meshing with each other" means that the two shearing blades reach a positional relationship during relative movement, where the two cutting edges interlock and can apply shearing force to the material between them. This shearing pair includes mating axial and radial cutting edges. There are various ways to specifically implement the "axial cutting edge" and "radial cutting edge." In one embodiment, both the first shearing blade 3 and the second shearing blade 4 are designed as L-shaped cutting edges. In this case, the cutting segment extending along the length direction of the strip 21 in the L-shaped cutting edge is the axial cutting edge, and the cutting segment extending along the width direction of the strip 21 is the radial cutting edge.

[0026] Therefore, in any of the above embodiments, the axial cutting edge extends along the length direction of the strip 21 and is used to longitudinally trim the strip 21. When the first shearing blade 3 and the second shearing blade 4 engage, the axial cutting edge cuts into the edge of the strip 21 along the length direction of the strip 21, longitudinally separating the edge waste from the strip 21 body to form a strip 21 of a fixed width. The radial cutting edge extends along the width direction of the strip 21 and is used to laterally break the trimmed edge material. While the axial cutting edge completes the longitudinal trimming, the radial cutting edge cuts into the trimmed edge material along the width direction of the strip 21, laterally cutting the continuously trimmed edge material into fragments of a specified length.

[0027] Through the relative movement of the first blade component 1 and the second blade component 2, and the shearing pair formed between the first shearing blade 3 and the second shearing blade 4, which has both axial and radial shearing functions, this device integrates the longitudinal edge cutting action of the strip 21 and the transverse shredding action of the edge material into a single meshing stroke of the same shearing pair, completing them synchronously. Since the edge cutting and shredding are combined into one in the shearing pair, the edge material separated from the strip 21 body is transversely cut into discrete fragments the instant it is generated. This working method eliminates the intermediate product form of continuous edge filaments from the process principle, thereby breaking the technical problem in the traditional segmented process that "continuous edge filaments are inevitably generated for efficient edge cutting, which in turn leads to subsequent jamming, breakage, accumulation, and equipment downtime." At the same time, since it is no longer necessary to set up a separate shredder and its edge filament guidance and tension control system with the disc shear, the structure of the entire equipment is greatly simplified, and the operational stability is also significantly improved.

[0028] In a preferred embodiment, the first cutting component 1 is configured to rotate about its own axis, while the second cutting component 2 is configured to be fixed. In other embodiments, both the first cutting component 1 and the second cutting component 2 can rotate about their own axes.

[0029] In this preferred embodiment, the rotation axis of the first blade component 1 coincides with the center line of the second blade component 2, and the two are arranged coaxially. This coaxial arrangement ensures that the shearing gap d along the circumference remains uniform during the engagement of the first shearing blade 3 and the second shearing blade 4. Since the shearing gap d is a key factor determining the cut quality, a uniform gap results in neat edges and fewer burrs. Furthermore, the coaxial structure is compact, facilitating overall installation and adjustment.

[0030] Furthermore, based on the aforementioned rotary configuration, such as Figure 4 and Figure 5 As shown, the first cutting component 1 has a ratchet-shaped body 5, and the first shearing blade 3 is disposed on the outer peripheral surface of the ratchet-shaped body 5. The term "ratchet-shaped body 5" refers to the fact that the main body of the first cutting component 1 is ratchet-shaped. For example, the ratchet-shaped body 5 can be a single piece forged or cast, with a blade groove machined on its outer peripheral surface; it can also be a wheel-shaped structure welded from a hub and a spoke, with replaceable blade blocks bolted to its outer peripheral surface. Distributing the first shearing blade 3 on the outer peripheral surface of the wheel-shaped body 5 maximizes the linear velocity of the first shearing blade 3 during rotation, which is beneficial for efficient shearing of the strip 21.

[0031] In addition, such as Figure 1As shown, the first cutting component 1 also includes a first motor 16, a rotating spindle 13, and a locking nut 15. Specifically, the ratchet-shaped body 5 of the first cutting component 1 is mounted on the rotating spindle 13. The first motor 16 is connected to the rotating spindle 13 to drive the rotating spindle 13 to rotate around its own axis, thereby driving the ratchet-shaped body 5 and the first shearing blade 3 mounted on it to rotate, thus realizing the shearing motion. The locking nut 15 is screwed onto the end of the rotating spindle 13 from the end away from the first motor 16 to axially limit the ratchet-shaped body 5 and prevent it from axially moving during rotation.

[0032] Accordingly, the second blade component 2 has a disc-shaped body 6, and the second shearing blade 4 is disposed on the end face protrusion of the disc-shaped body 6. The term "disc-shaped body 6" here refers to the second blade component 2 being disc-shaped or sleeve-shaped.

[0033] It should be further noted that the ratchet-shaped body 5 and the disc-shaped body 6 are not perfectly circular, but both have notches. Specifically, the outer periphery of the ratchet-shaped body 5 has one or more notches, which provide axial clearance for the edge of the strip 21; the annular wall of the disc-shaped body 6 also has notches, which provide radial access for the edge of the strip 21. In the working state, the edge of the strip 21 is located in the intersection area of ​​these two notches. That is to say, the strip 21 extends laterally into the internal cavity of the disc-shaped body 6 from the notch of the ratchet-shaped body 6, while the notch of the ratchet-shaped body 5 periodically passes through the position of the strip 21 with rotation, so that the edge of the strip 21 is exactly located in the gap between the outer peripheral surface of the ratchet-shaped body 5 and the inner peripheral surface of the disc-shaped body 6.

[0034] Therefore, when the ratchet-shaped body 5 rotates, the first shearing blade 3, located on its outer circumference, passes through the notch and then meets the edge of the strip 21 extending into the disc-shaped body 6. During continued rotation, it engages with the second shearing blade 4 fixed to the disc-shaped body 6. At this time, the edge of the strip 21 is located between the first shearing blade 3 and the second shearing blade 4, subjected to longitudinal shearing by the axial blade and transverse shearing by the radial blade, thus simultaneously completing edge cutting and fragmentation in one engagement stroke.

[0035] Furthermore, to reduce the impact load during the shearing process, such as Figure 6As shown, the first shearing blade 3 can be arranged at an angle on the outer circumferential surface of the ratchet-shaped body 5 of the first blade component 1. "Asymmetrical arrangement" means that the cutting edge of the first shearing blade 3 is at a certain angle relative to the rotation axis of the first blade component 1, rather than being parallel. For example, the angle θ between the cutting edge of the first shearing blade 3 and the rotation axis can be between 3° and 15°; alternatively, the angle of the cutting edge can also be achieved through the inclined surface of the blade holder or pad. With this configuration, the engagement between the first shearing blade 3 and the second shearing blade 4 during rotation no longer occurs simultaneously along the entire cutting edge width, but rather begins from a point on the edge of the strip 21, forming a scissor-like progressive shearing as rotation progresses. Therefore, the shearing force is not applied instantaneously across the entire shearing surface, but is applied gradually, significantly reducing the peak load and impact vibration during shearing, making the equipment operate more smoothly and with lower noise, while also extending the service life of the blades.

[0036] In a preferred embodiment, there are multiple first shearing blades 3, which are evenly distributed circumferentially along the outer periphery of the ratchet-shaped body 5 of the first blade component 1. For example, two, four, six, or eight first shearing blades 3 can be selected according to the thickness of the strip 21, the running speed, and the required fragment length. When two first shearing blades 3 are provided, the central angle between adjacent blade edges is 180 degrees; when six first shearing blades 3 are provided, the central angle between adjacent blade edges is 60 degrees. The circumferentially evenly distributed layout ensures that during the rotation of the first blade component 1, the first shearing blades 3 engage with the second shearing blades 4 sequentially and at equal intervals, resulting in a uniform distribution of shearing force in the circumferential direction, good dynamic balance, and is beneficial for the stable operation of the equipment at high speeds.

[0037] Since the first shearing blades 3 are evenly distributed circumferentially along the outer periphery of the ratchet-shaped body 5, each first shearing blade 3 engages with the second shearing blade 4 once per rotation of the first blade component 1, completing multiple shearing actions. Correspondingly, during the continuous rotation of the first blade component 1, the strip 21 is continuously trimmed and broken, with each shearing action transversely cutting the trimmed edge into a fragment. Therefore, the length L of the fragmented edge is determined by the running speed v of the strip 21, the rotational speed n of the first blade component 1, and the number m of the first shearing blades 3, satisfying the relationship L = v / (n × m). Here, v represents the linear velocity of the strip 21 when it enters the shearing zone, n represents the number of rotations of the first blade component 1 per unit time, and m represents the number of first shearing blades 3 evenly distributed on the outer periphery of the disc-shaped body 5.

[0038] As can be seen from the above relationships, when the running speed v of the strip 21 and the number m of the first shearing blades 3 are fixed, adjusting the rotational speed n of the first blade component 1 can change the length L of the shredded edge material; or, when the running speed v of the strip 21 and the rotational speed n of the first blade component 1 are fixed, replacing the cutter head with one having a different number m of the first shearing blades 3 can also adjust the length of the shredded edge material. Therefore, this device achieves precise control over the length of the shredded edge material, enabling it to flexibly adapt to the production process requirements of strips 21 of different specifications.

[0039] In a preferred embodiment, the disc-shaped body 6 of the second blade component 2 adopts a split structure, consisting of a body portion 7 and an end face protrusion 8 detachably fixed to the body portion 7. A notch is provided on the body portion 7, and the second shearing blade 4 is provided on the end face protrusion 8. During long-term use, the cutting edge of the second shearing blade 4 will become dull due to wear and needs to be re-sharpened to restore its sharpness. After the cutting edge is re-sharpened, the height of the second shearing blade 4 will decrease, resulting in an increase in the shearing gap d between the first shearing blade 3 and the second shearing blade 4, affecting the cut quality. If the second blade component 2 is a one-piece structure, the entire second blade component 2 needs to be replaced after re-sharpening, which is costly and time-consuming. The split structure allows only the end face protrusion 8 to be removed for re-sharpening or replacement, while the body portion 7 can continue to be used, significantly reducing maintenance costs.

[0040] Furthermore, to address the issue of reduced cutting edge height leading to changes in the shearing gap d after sharpening, a height compensation shim 9 is provided between the end face protrusion 8 and the body 7. This height compensation shim 9 compensates for the height change of the second shearing blade 4 after sharpening. Specifically, when the second shearing blade 4 becomes thinner after sharpening, a height compensation shim 9 of appropriate thickness can be added between the end face protrusion 8 and the body 7 to raise the end face protrusion 8, restoring the cutting edge of the second shearing blade 4 to its working height before sharpening, thereby maintaining the shearing gap d between the first shearing blade 3 and the second shearing blade 4 unchanged. The height compensation shim 9 can be a set of thin sheets with different thicknesses, such as metal shims with thicknesses of 0.05mm, 0.1mm, and 0.2mm, and one or more shims can be selected for use in combination depending on the actual sharpening amount.

[0041] With the aforementioned split structure and the height compensation shim 9, the device can maintain a precise shearing gap d in a simple and low-cost manner during long-term operation, ensuring the long-term consistency of cutting edge and breakage quality, while significantly extending the effective service life of the entire blade component and reducing the total life-cycle maintenance cost.

[0042] Example 2 This embodiment provides a strip cutting and breaking device as a further optimization of the aforementioned Embodiment 1.

[0043] On a continuous strip production line, the strip 21 runs continuously at a high linear speed. In the aforementioned embodiment, when the shearing unit is working, the first shearing blade 3 and the second shearing blade 4 need to maintain speed synchronization with the continuously running strip 21 in the running direction at the moment of engagement; otherwise, longitudinal pulling will occur, resulting in uneven cuts or even damage to the surface of the strip 21. This embodiment addresses this technical problem.

[0044] In a preferred embodiment, such as Figures 1 to 6 As shown, the device also includes a movable base 11, on which the shearing unit, consisting of a first blade component 1 and a second blade component 2, is mounted as a whole. The "movable base 11" referred to here is a mounting platform that supports the entire shearing unit and is movable relative to the fixed frame 10.

[0045] As a preferred embodiment, such as Figure 1 As shown, the movable base 11 can be a slide cylinder. The movable base 11 is mounted on a frame 10 in a way that allows it to slide along the running direction of the strip 21. For example, the movable base 11 and the frame 10 can be slidably connected by a linear guide rail and a slider. Alternatively, a structure can be adopted that uses a guide post and a guide sleeve, or a dovetail groove and a wedge.

[0046] As another embodiment of the movable base, the movable base 11 can be a slide or a sliding plate with a slider or groove structure at its bottom.

[0047] By integrating the entire shearing unit onto the movable base 11, the shearing unit is no longer rigidly connected to the frame 10 in the running direction of the strip 21, but instead has a certain degree of freedom of movement. With this configuration, at the moment of shearing, the shearing unit can displace along the running direction of the strip 21, thus providing a structural basis for achieving speed synchronization between the blade and the strip 21. This dynamic coordination mechanism eliminates longitudinal tension during the shearing process, ensuring a smooth, burr-free cut.

[0048] There can be different implementation schemes for the motion control method of the movable base 11.

[0049] In a preferred embodiment, the servo movement of the movable base 11 is passively driven by shear force. Specifically, as... Figure 1 and Figure 3As shown, the device also includes a return spring 12, which is disposed between the movable base 11 and the frame 10. The return spring 12 applies an elastic force to the movable base 11 in the opposite direction to its original position along the running direction of the strip 21. The term "return spring 12" refers to an elastic element capable of storing elastic potential energy after being compressed or stretched, and releasing this potential energy to return the movable base 11 to its initial position after the external force is removed. For example, the return spring 12 can be a helical compression spring, a disc spring, or a nitrogen spring.

[0050] During operation, at the instant the first shearing blade 3 and the second shearing blade 4 engage and cut into the strip 21, the running power of the strip 21 is transmitted to the entire shearing unit through the friction between the blades and the strip 21, generating a pulling force along the running direction of the strip 21. This pulling force overcomes the elastic force of the return spring 12, pushing the movable base 11 and the shearing unit on it to slide along the running direction of the strip 21. During this process, the blades and the strip 21 maintain synchronous movement in the running direction without relative displacement. When the shearing is completed and the blades retract, the pulling force disappears, and the return spring 12 pushes the movable base 11 back to its initial position, waiting for the next blade to enter the shearing. The advantage of this passive follow-up method is that it has a simple structure, requires no additional power or control system, and relies entirely on the force naturally generated during the shearing process to achieve synchronization.

[0051] As an alternative implementation, the servo drive of the movable base 11 is achieved through active driving. Specifically, the device also includes a servo drive unit, which is connected to the movable base 11 for actively driving the movable base 11 to move along the running direction of the strip 21 at a speed synchronized with the speed of the strip 21. The term "servo drive unit" here refers to a drive system capable of precisely controlling the speed and position of movement according to control signals. For example, the servo drive unit can be a servo motor coupled with a ball screw pair, where the servo motor drives the screw to rotate, and the screw nut is fixedly connected to the movable base 11, converting rotational motion into linear motion. Alternatively, a linear motor can be used to directly drive the movable base 11, or a servo motor coupled with a rack and pinion pair can be used for transmission. During operation, a speed sensor installed on the production line detects the running speed of the strip 21 in real time. The control system calculates the synchronous motion parameters based on this speed signal and controls the servo drive unit to accelerate the movable base 11 to the same linear speed as the strip 21, maintaining this speed throughout the shearing process. After shearing is completed, the servo drive drives the movable base 11 to quickly return to its initial position, waiting for the next work cycle. The advantage of this active synchronization method is that it has high synchronization accuracy and fast response, and is especially suitable for production conditions with frequent changes in operating speed or extremely high speed.

[0052] Example 3 This embodiment provides a strip cutting and breaking device as a further optimization of the aforementioned Embodiment 1 and Embodiment 2.

[0053] In the aforementioned continuous production line for strip 21, the first shearing blade 3 and the second shearing blade 4 in the shearing unit will gradually wear down during long-term operation, requiring periodic replacement or sharpening. If only one shearing unit is installed, the entire line must be shut down when the blades are replaced, severely impacting production efficiency. Therefore, this embodiment addresses this problem.

[0054] In a preferred embodiment, such as Figure 1 As shown, on each side of the running path of the strip 21, two shearing units, each consisting of a first blade component 1 and a second blade component 2, are symmetrically arranged on a rotatable station switching frame 14. The "station switching frame 14" refers to a support structure rotatably mounted on the frame 10, used to support multiple shearing units and achieve station switching between different shearing units through rotation. For example, the station switching frame 14 can be implemented as a turret, with its rotation axis perpendicular to the plane of the strip 21, and the two shearing units respectively mounted on symmetrical sides of the turret. Figure 1 In the diagram, the dotted line circle represents the trajectory, which is the rotational switching trajectory of the workstation switching frame 14.

[0055] By rotating the station switching frame 14, one set of shearing units can be selectively switched to an online working station, while the other can be switched to an offline maintenance station. The "online working station" refers to a position where the shearing unit is capable of performing edge trimming and breaking operations on the strip 21. In this position, the shearing unit is aligned with the running path of the strip 21, and the first shearing blade 3 and the second shearing blade 4 are in a meshing state. The "offline maintenance station" refers to a position where the shearing unit is located away from the running path of the strip 21. Operators can safely perform maintenance operations such as blade replacement, sharpening, and gap adjustment in this position without being disturbed by the online running strip 21.

[0056] In one specific implementation, the station switching frame 14 rotates 180 degrees. When the shearing unit at the online workstation requires maintenance, the station switching frame 14 rotates 180 degrees, switching the maintained standby shearing unit to the online workstation, while simultaneously switching the shearing unit to be maintained to the offline maintenance station. After the switching process is completed, the station switching frame 14 is locked at the current angle by a positioning pin or locking mechanism to ensure the stability of the shearing unit's position during operation.

[0057] Through the aforementioned symmetrical dual-station layout and the rotatable station switch 14, this device achieves complete decoupling between maintenance operations and production operations. While one shearing unit performs online edge cutting and shredding tasks, the operator can perform blade replacement, sharpening, or gap adjustment operations on the other shearing unit offline. When a blade change is required, only a brief deceleration or buffering using the strip 21 reserve device is needed, and the station switch 14 can complete the station switch without prolonged downtime. This significantly improves the overall operating rate of the equipment and the continuous operation capability of the production line.

[0058] In this embodiment, as Figure 4 As shown, the device also includes a base 18, an adjusting screw 19, and a second motor 20. Specifically, the bottoms of the station switching frames 14 located on both sides of the strip 21 are connected to the adjusting screw 19, and the second motor 20 is driven by the adjusting screw 19 to drive it to rotate around its own axis. The adjusting screw 19 is a bidirectional threaded screw, meaning that its two ends are respectively provided with threaded sections with opposite directions of rotation. Thus, when the second motor 20 drives the adjusting screw 19 to rotate in one direction, the station switching frames 14 on both sides of the strip 21 move towards each other and approach each other under the drive of the opposite-direction threads; when the adjusting screw 19 rotates in the opposite direction, the station switching frames 14 on both sides move away from each other and move away from each other. In this way, the shearing units on the station switching frames 14 on both sides can synchronously adjust their positions in the width direction of the strip 21, thereby achieving precise and symmetrical adjustment of the cutting edge width to adapt to the processing requirements of strips 21 of different specifications.

[0059] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the device also includes a support roller 17. Specifically, the support roller 17 is rotatably mounted on the station switching frame 14 and located downstream of the shearing zone, i.e., in the exit direction of the strip 21. The upper surface of the support roller 17 is substantially flush with or slightly higher than the upper surface of the auxiliary blade, providing stable support for the lower surface of the strip 21 after shearing. Therefore, the strip 21 will not sag or vibrate due to gravity after leaving the shearing zone, further ensuring the stability of the shearing process and the uniformity of the cut quality. Alternatively, the support roller 17 can also be a fixedly mounted arc-shaped support plate to achieve the same support function.

[0060] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A strip cutting and crushing device, characterized in that, include: The shearing unit includes a first blade component (1) and a second blade component (2) that can move relative to each other; the first blade component (1) is provided with at least one first shearing blade (3), and the second blade component (2) is provided with at least one second shearing blade (4); the first shearing blade (3) and the second shearing blade (4) form a shearing pair when they mesh with each other, the shearing pair includes a mutually cooperating axial blade portion and a radial blade portion, the axial blade portion extends along the length direction of the strip (21) to perform longitudinal edge cutting, and the radial blade portion extends along the width direction of the strip (21) to perform transverse fragmentation.

2. The strip cutting and breaking device according to claim 1, characterized in that, The first cutting component (1) is configured to rotate about its own axis, the second cutting component (2) is configured to be fixed, and the rotation axis of the first cutting component (1) coincides with the center line of the second cutting component (2).

3. The strip cutting and breaking device according to claim 2, characterized in that, The first blade component (1) has a ratchet-shaped body (5) and the first shearing blade (3) is disposed on the outer peripheral surface of the ratchet-shaped body (5); the second blade component (2) has a disc-shaped body (6) and the second shearing blade (4) is disposed on the disc-shaped body (6).

4. The strip cutting and breaking device according to claim 3, characterized in that, The first shearing blade (3) is arranged obliquely on the outer peripheral surface of the ratchet-shaped body (5) of the first blade component (1) to form a progressive shear along the edge of the strip (21) during rotation.

5. The strip cutting and breaking device according to claim 3, characterized in that, The number of the first shearing blades (3) is multiple and they are evenly distributed along the circumference of the disc-shaped body (5); the length L of the broken edge material satisfies L=v / (n×m), where v is the running speed of the strip (21), n ​​is the rotation speed of the first blade component (1), and m is the number of the first shearing blades (3).

6. The strip cutting and breaking device according to claim 3, characterized in that, The first cutting tool component (1) also includes a first motor (16), a rotating spindle (13), and a locking nut (15); the ratchet-shaped body (5) is mounted on the rotating spindle (13), the first motor (16) is connected to the rotating spindle (13) for transmission, so as to drive the rotating spindle (13) to rotate around its own axis; the locking nut (15) is screwed onto the end of the rotating spindle (13) from the end away from the first motor (16) to axially limit the ratchet-shaped body (5).

7. The strip cutting and breaking device according to claim 3, characterized in that, The disc-shaped body (6) is composed of a body part (7) and an end face protrusion (8) detachably fixed to the body part (7). The second shearing blade (4) is disposed on the end face protrusion (8). A height compensation shim (9) is provided between the end face protrusion (8) and the body part (7) to compensate for the height change of the second shearing blade (4) after grinding.

8. The strip cutting and shredding device according to any one of claims 1-7, characterized in that, It also includes a movable base (11), on which the shearing unit is mounted; the movable base (11) is slidably mounted on a frame (10) along the running direction of the strip (21).

9. The strip cutting and breaking device according to claim 8, characterized in that, It also includes a return spring (12), which is disposed between the movable base (11) and the frame (10) and is used to apply an elastic force to the movable base (11) to reset it in the opposite direction of the running direction of the strip (21).

10. The strip cutting and shredding device according to any one of claims 1-7, characterized in that, On each side of the running path of the strip (21), two sets of shearing units are symmetrically arranged on a rotatable workstation switching frame (14). By rotating the workstation switching frame (14), one set can be selectively switched to the online working station and the other set can be switched to the offline maintenance station.

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