Blade-adjustable shearing machine

Abstract

A shearing machine with adjustable blades is disclosed, relating to the field of metal shearing technology. It includes a frame and a cutter shaft rotatably connected to the frame. A plurality of annular blades are slidably connected to the cutter shaft. A guide groove is formed on the cutter shaft, and each of the annular blades is provided with a guide block that slidably engages with the guide groove. The cutter shaft is equipped with an unequal-distance adjustment component for adjusting and locking the annular blades. It also has an equal-distance adjustment component for driving the annular blades to move synchronously and equidistantly along the axial direction of the cutter shaft. A transmission component is provided on the cutter shaft. When the unequal-distance adjustment component unlocks the annular blades, the transmission component is driven by the unequal-distance adjustment component and pushes the equal-distance adjustment component to lock the annular blades. This application enables dual-mode adjustable blade spacing. Through the unequal-distance adjustment component and the equal-distance adjustment component, both unequal-distance and equidistant adjustment of the annular blades can be achieved to meet different cutting requirements.

Description

Technical Field

[0001] This application relates to the field of metal shearing technology, and in particular to a shearing machine with adjustable blades. Background Technology

[0002] As attached Figure 11 As shown, a shearing machine is a commonly used equipment for slitting metal sheets. Existing shearing machines typically include a frame, a cutter shaft arranged vertically and horizontally, and a mounting shaft. Multiple annular blades are installed at axial intervals on the cutter shaft, and a receiving ring is correspondingly set on the mounting shaft to cooperate with the annular blades. The receiving ring has a groove for the annular blades to cut into. The metal sheet to be cut passes between the annular blades and the receiving ring, and the sheet is slitted by the shearing cooperation between the annular blades and the groove.

[0003] In existing structures, the annular blades are typically mounted on the cutter shaft and axially clamped and fixed to the cutter shaft by a hydraulic nut. When cutting metal sheets of different widths, the axial spacing between adjacent annular blades needs to be adjusted accordingly. However, in actual production, the adjustment of the blade spacing often faces two different requirements: one is that all blades need to move synchronously and equidistantly along the cutter shaft axis to cut the sheet material at equal intervals; the other is that the spacing between the blades needs to be adjusted unequally according to the specific sheet width.

[0004] However, existing adjustment methods cannot simultaneously meet the needs of equidistant and unequal-distance cutting. Regardless of the adjustment method, operators must disassemble the hydraulic nuts, manually adjust the blade positions one by one, and then re-tighten them. This process is cumbersome and inefficient, and it is impossible to quickly lock the blades for equidistant adjustment while releasing the unequal-distance adjustment state, which severely limits the adjustment flexibility and adaptability of the shearing machine. Summary of the Invention

[0005] Traditional shearing machines have a single blade spacing adjustment method, which cannot simultaneously meet the needs of unequal and equal spacing cutting. This application provides a shearing machine with adjustable blades.

[0006] The present application provides a shearing machine with adjustable blades, which adopts the following technical solution: An adjustable blade shearing machine includes a frame and a cutter shaft rotatably connected to the frame. A plurality of annular blades are slidably connected to the cutter shaft. A guide groove is provided on the cutter shaft. Each of the annular blades is provided with a guide block that slidably engages with the guide groove. An unequal-distance adjustment assembly for adjusting and locking the annular blades is provided on the cutter shaft. An equidistant adjustment assembly for driving the annular blades to move synchronously and equidistantly along the axial direction of the cutter shaft is also provided on the cutter shaft. A transmission assembly is provided on the cutter shaft. When the unequal-distance adjustment assembly unlocks the annular blades, the transmission assembly is driven by the unequal-distance adjustment assembly and pushes the equidistant adjustment assembly to lock the annular blades.

[0007] By adopting the above technical solution, the frame provides a mounting base for the cutter shaft and mounting shaft, and can drive the cutter shaft and mounting shaft to rotate. The cutter shaft provides a mounting base for the annular blades. Several annular blades are fitted on the cutter shaft for cutting metal sheets. The guide groove on the cutter shaft slides in conjunction with the guide block fixedly connected to the annular blades. The unequal-distance adjustment component can adjust the annular blades unequally according to the actual production needs of the metal sheets and lock them. The equal-distance adjustment component is used to adjust the annular blades to be evenly distributed. When the unequal-distance adjustment component is unlocked, the transmission component drives the equal-distance adjustment component to complete the positioning and locking of the annular blades. When cutting metal sheets unequally, the restriction on several annular blades is first released by the unequal-distance adjustment component, and then the distance between each annular blade is adjusted according to production needs. After the adjustment is completed, the annular blades are locked again by the unequal-distance adjustment component. When cutting at equal distance, the unequal-distance adjustment component is unlocked first, and then the transmission component drives the equal-distance adjustment component to lock the annular blades. Then the annular blades are adjusted at equal distance by the equal-distance adjustment component. This shearing machine can flexibly switch between equidistant and unequal-distance cutting modes, is easy to adjust and operate, and has reliable positioning, which can meet the diverse cutting process requirements of metal sheets.

[0008] Optionally, the unequal distance adjustment assembly includes a cylinder mounted on the cutter shaft, a support plate mounted on the free end of the cylinder piston rod, and several limiting blocks mounted on the side of the support plate away from the cylinder. The guide block abuts against two adjacent limiting blocks, and one end of the cutter shaft is provided with an air pipe connector for supplying air to the cylinder.

[0009] By adopting the above technical solution, when making unequal distance adjustments, the cylinder is activated, causing the piston rod of the cylinder to retract and drive the support plate. The support plate drives the limiting block, moving the limiting block away from the guide block, thereby releasing the limitation block from the guide block. Subsequently, the operator manually pushes the annular blade on the cutter shaft to adjust the adjacent spacing according to the actual cutting size of the metal sheet. At the same time, it is necessary to ensure that the adjusted spacing matches the preset spacing of the adjacent limiting blocks, so that the guide block can accurately correspond to the position of the limiting block. After the adjustment is completed, the cylinder is activated, the piston rod of the cylinder extends and pushes the support plate. The support plate drives the limiting block closer to the guide block until the support plate and one side of the guide block are tightly abutted. The limiting block limits and fixes the guide block, preventing circumferential displacement or axial sliding between the annular blade and the cutter shaft.

[0010] Optionally, the transmission assembly includes a push rod slidably connected to the cutter shaft and a first wedge block disposed at one end of the push rod, wherein the end of the push rod away from the first wedge block is used to abut against the support plate.

[0011] By adopting the above technical solution, when the metal sheet needs to be adjusted at equal intervals, the cylinder drives the support plate, which releases the restriction of the annular blade by the unequal interval adjustment component. After the restriction is released, the cylinder continues to contract. During the continuous contraction, the support plate abuts against the end of the push rod away from the first wedge block and pushes the push rod, which in turn pushes the first wedge block. The first wedge block pushes the unequal interval adjustment component, which locks the annular blade.

[0012] Optionally, the equidistant adjustment assembly includes a handle rotatably connected to the cutter shaft, several telescopic components mounted on the cutter shaft and linked to the handle for driving the annular blade to move at equal intervals, and a locking component mounted on the telescopic components for locking the annular blade. Each of the annular blades has a limiting hole through which the locking component passes.

[0013] By adopting the above technical solution, when the metal sheet needs to be adjusted at equal intervals, the cylinder is first activated. The piston rod of the cylinder drives the support plate to move synchronously, and the support plate drives the limiting block synchronously, so that the limiting block and the support plate move away from the guide block, thereby releasing the restriction on the annular blade. Then the cylinder continues to retract, so that the support plate contacts the push rod and pushes the push rod and the first wedge block. The first wedge block drives the locking component, so that the locking component passes into the limiting hole in the annular blade and locks the annular blade. Then the handle is turned, and the handle drives several telescopic components, so that the telescopic components drive the locking component and the annular blade to move synchronously, thereby realizing the equal interval adjustment of the annular blade.

[0014] Optionally, each of the telescopic components includes a first link and a second link rotatably connected to one end of the first link. In two adjacent sets of telescopic components, the end of the second link of one set away from the first link is rotatably connected to the end of the first link of the other set away from the second link, thereby achieving synchronous linkage of the telescopic components. In one set of telescopic components, the end of the first link away from the second link is rotatably connected to a handle. A first slider is rotatably connected to the middle of both the first and second links. The first slider is slidably connected to the cutter shaft. A second slider is rotatably connected to the side of both the first and second links away from the first slider. The second slider is slidably connected to the cutter shaft.

[0015] By adopting the above technical solution, when the handle is turned, the handle drives the first connecting rod rotatably connected to one end. Under the push of the handle and the restriction of the first slider, the first connecting rod slides along the axis of the cutter shaft. At the same time, the first connecting rod pushes the second connecting rod, so that the second connecting rod, under the thrust of the first connecting rod, is also guided and limited by the first slider and slides along the axis of the cutter shaft. Thus, the rotatable connection between the first connecting rod and the second connecting rod forms a telescopic linkage mechanism, which expands or contracts with the rotation of the handle. This telescopic movement is further transmitted to the second sliders respectively set on the first connecting rod and the second connecting rod, so that the second slider drives the locking component and the annular blade to move equidistantly.

[0016] Optionally, the locking assembly includes a limiting rod slidably connected in the second slider, a baffle fixedly connected to the limiting rod, a spring sleeved on the limiting rod, and a second wedge block disposed at one end of the limiting rod. The limiting rod is clearance-fitted with the limiting hole, and the second wedge block slides in contact with the wedge surface of the first wedge block. One end of the spring is disposed on the inner wall of the second slider, and the other end of the spring is disposed on the side of the baffle away from the first wedge block. The cutter shaft is also provided with a first groove for the limiting rod to slide radially along the cutter shaft.

[0017] By adopting the above technical solution, during equidistant adjustment, as the cylinder continues to contract, the support plate pushes the push rod under the drive of the cylinder piston rod. The push rod simultaneously pushes the first wedge block, and the wedge surfaces of the first wedge block and the second wedge block slide in contact. As the push rod continues to push, the first wedge block pushes the second wedge block, causing the second wedge block to push the limiting rod and the baffle. The baffle squeezes the spring until the limiting rod enters the limiting hole and abuts against the inner wall of the annular blade. At this time, the cylinder stops contracting, and the annular blade is locked with the second slider under the limitation of the limiting rod and moves synchronously with the movement of the second slider.

[0018] Optionally, a positioning shaft is provided on the cutter shaft, the handle is rotatably connected to the positioning shaft, a positioning ring for limiting the handle is provided on the positioning shaft, and a fastening nut is threadedly connected to the positioning shaft, the fastening nut abutting against the side of the handle away from the positioning ring.

[0019] By adopting the above technical solution, when the handle is turned, the handle rotates around the axis of the positioning shaft. After adjusting the spacing of the annular blades, the fastening nut is tightened so that the fastening nut and the side of the handle away from the positioning ring are tightly abutted. Under the combined limiting action of the fastening nut and the positioning ring, the handle is fixed, preventing the hinge angle between the first link and the second link from expanding or contracting during the rotation of the annular blades by the cutter shaft.

[0020] Optionally, a protective plate is fixedly connected to one end of the cutter shaft, and the air pipe connector is located at the axial position of the protective plate.

[0021] By adopting the above technical solution, the protective plate is fixedly connected to one end of the cutter shaft with bolts. It is detachable, which facilitates the installation of the annular blade. The air pipe connector is rotatably connected to the axial position of the protective plate. The air pipe connector is a rotary air pipe connector, which can rotate freely relative to the protective plate during the rotation of the cutter shaft, effectively preventing the air supply pipe of the cylinder from getting tangled.

[0022] Optionally, a second groove is provided at the middle position of the second slider to guide the sliding of the first wedge block.

[0023] By adopting the above technical solution, the second groove is opened in the middle of the second slider. When the push rod pushes the first wedge block, the first wedge block first contacts the wedge surface of the second wedge block. Under the limiting and guiding effect of the second groove and the continuous pushing force of the push rod, the first wedge block pushes the second wedge block until one side of the first wedge block abuts against the inner wall of the second slider.

[0024] Optionally, a limiting groove is provided on the cutter shaft, and the first slider slides in cooperation with the limiting groove.

[0025] By adopting the above technical solution, the first slider is slidably connected in the limiting groove on the cutter shaft. The limiting groove prevents the first slider from shaking or circumferentially twisting during the sliding process.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Dual-mode adjustable blade spacing to adapt to various cutting needs: The spacing between each ring blade can be flexibly adjusted through the unequal spacing adjustment component to meet the non-equal spacing cutting needs of metal sheets; the ring blade can move synchronously and equally through the equal spacing adjustment component to adapt to equal spacing cutting scenarios without the need to change equipment or blades, thus improving the equipment's versatility and cutting flexibility. 2. Stable locking after adjustment to ensure cutting accuracy: When adjusting unequal distances, the cylinder drives the limit block and guide block to precisely engage, and the support plate abuts against the guide block to achieve dual locking of the ring blade in both the circumferential and axial directions; when adjusting unequal distances, the transmission component links with the locking component to make the limit rod embed into the limit hole of the ring blade, preventing the blade from shifting during the cutting process, ensuring accurate cutting dimensions, and reducing waste. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is an overall schematic diagram of the cutter shaft and frame provided in the embodiments of this application. Figure 2 This is an overall schematic diagram of the cutter shaft and annular blade provided in the embodiments of this application; Figure 3 This is a cross-sectional view of the cutter shaft and annular blade provided in the embodiments of this application; Figure 4 This is an overall schematic diagram of the unequal-distance adjustment component provided in the embodiments of this application; Figure 5 This is an overall schematic diagram of the cutter shaft, annular blade, and unequal-distance adjustment assembly provided in the embodiments of this application; Figure 6 This is a cross-sectional view of the cutter shaft, the annular blade, and the second slider provided in the embodiments of this application; Figure 7 This is an overall schematic diagram of the equidistant adjustment component and transmission component provided in the embodiments of this application; Figure 8 This is an overall schematic diagram of the telescopic component provided in the embodiments of this application; Figure 9 This is a schematic diagram of the annular blade provided in an embodiment of this application; Figure 10 This is an overall schematic diagram of the locking component provided in the embodiments of this application; Figure 11 This is an overall schematic diagram of the cutter shaft and frame provided in the embodiments of this application.

[0029] Reference numerals: 1. Frame; 2. Cutter shaft; 3. Annular blade; 4. Guide groove; 5. Guide block; 6. Unequal distance adjustment assembly; 601. Cylinder; 602. Support plate; 603. Limiting block; 7. Equal distance adjustment assembly; 701. Handle; 702. Telescopic assembly; 7021. First connecting rod; 7022. Second connecting rod; 703. Locking assembly; 7031. Limiting rod; 7032. Baffle; 7033. Spring; 7034. Second wedge block; 8. Transmission assembly; 801. Push rod; 802. First wedge block; 9. Air pipe connector; 10. Limiting hole; 11. First slider; 12. Second slider; 13. First slide groove; 14. Positioning shaft; 15. Positioning ring; 16. Fastening nut; 17. Protective plate; 18. Second slide groove; 19. Limiting groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 This application will be described in further detail.

[0031] This application discloses a shearing machine with adjustable blades.

[0032] Reference Figure 1 , Figure 2 and Figure 3An adjustable blade shearing machine includes a frame 1, a blade shaft 2 rotatably connected to the frame 1, a plurality of annular blades 3 slidably connected to the blade shaft 2, a guide groove 4 formed on the blade shaft 2, a guide block 5 set on the annular blades 3, an unequal distance adjustment component 6 set on the blade shaft 2, an equal distance adjustment component 7 set on the blade shaft 2, and a transmission component 8 set on the blade shaft 2.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The frame 1 provides a mounting base for the cutter shaft 2. The cutter shaft 2 is rotatably connected to the frame 1 of the shearing machine and rotates under the drive of a motor, providing a mounting base for the annular blades 3, the unequal-distance adjustment assembly 6, the equal-distance adjustment assembly 7, and the transmission assembly 8. Several annular blades 3 are slidably sleeved on the cutter shaft 2 for cutting metal sheets. The guide groove 4 on the cutter shaft 2 and the guide block 5 fixedly connected to the annular blades 3 slide in cooperation to prevent the annular blades 3 from sliding circumferentially relative to the cutter shaft 2 when the cutter shaft 2 drives the annular blades 3 to rotate, ensuring that the blades rotate synchronously with the cutter shaft 2. In this embodiment, the guide groove 4 adopts a dovetail groove structure. The structure is arranged in an isosceles trapezoidal shape, with guide block 5 and guide groove 4 adapted to each other, also arranged in an isosceles trapezoidal shape; the unequal distance adjustment component 6 is set on the cutter shaft 2, used to adjust the spacing of several annular blades 3 unequally, and to lock the adjusted annular blades 3; the equal distance adjustment component 7 is set on the cutter shaft 2, used to adjust the spacing of several annular blades 3 equally, to meet the equal distance cutting requirements of metal sheets; the transmission component 8 is used to provide driving force from the unequal distance adjustment component 6 and push the transmission component 8 when the equal distance adjustment component 7 is in the unlocked state, and the transmission component 8 synchronously drives the equal distance adjustment component 7 after being subjected to force, thereby limiting and locking the annular blades 3.

[0034] Reference Figure 1 , Figure 2 and Figure 3When performing unequal spacing adjustment, first install the annular blade 3 on the cutter shaft 2. The installation of the annular blade 3 is achieved through the cooperation of the guide block 5 and the guide groove 4. After the annular blade 3 is installed, ensure that the unequal spacing adjustment component 6 is in the unlocked state. According to the actual production needs of the metal sheet, push the annular blade 3 along the axis of the cutter shaft 2 to adjust the spacing between each annular blade 3. After the adjustment is completed, start the unequal spacing adjustment component 6 to lock the annular blade 3, ensuring that the position of the annular blade 3 is stable and preventing displacement during subsequent cutting. When it is necessary to perform equidistant adjustment on the metal sheet, first release the restriction on the annular blade 3 through the unequal spacing adjustment component 6. After the restriction is released, the unequal spacing adjustment component 6 is linked with the transmission component 8, and the transmission component 8 drives the equidistant adjustment component 7, thereby completing the limit locking of the annular blade 3 by the equidistant adjustment component 7. After the locking is completed, the annular blade 3 is adjusted equidistantly through the equidistant adjustment component 7.

[0035] Reference Figure 4 and Figure 5 The unequal distance adjustment component 6 includes a cylinder 601, a support plate 602, and several limit blocks 603. One end of the cutter shaft 2 is provided with an air pipe connector 9, and the other end of the cutter shaft 2 is provided with a protective plate 17.

[0036] Reference Figure 4 and Figure 5 The cylinder 601 is located on the inner wall of the cutter shaft 2 and is used to push the support plate 602 and several limiting blocks 603, thereby locking and unlocking the annular blade 3. The support plate 602 is fixedly connected to the free end of the piston rod of the cylinder 601, providing a mounting base for the limiting blocks 603 and also cooperating with the limiting blocks 603 to abut against the guide block 5, further locking the guide block 5. Several limiting blocks 603 are fixedly connected to the side of the support plate 602 away from the cylinder 601. The distance between two adjacent limiting blocks 603 is adapted to the thickness of the guide block 5, which can accurately engage the guide block 5 to limit the guide block 5, thereby restricting the annular blade 3 and preventing it from rotating on the cutter shaft 2. During operation, the annular blade 3 and the cutter shaft 2 are offset. The air pipe connector 9 is located on the axis of the protective plate 17, coinciding with the axis of the cutter shaft 2. One end of the air pipe connector 9 inside the cutter shaft 2 is sealed and connected to the cylinder 601 to prevent air leakage. The other end of the air pipe connector 9 can be connected to the air supply pipe to provide a stable air source for the cylinder 601. The air pipe connector 9 is a rotary type, which can rotate freely relative to the protective plate 17 during the rotation of the cutter shaft 2, effectively preventing the air supply pipe of the cylinder 601 from getting tangled. The protective plate 17 is fixedly connected to one end of the cutter shaft 2 by bolts and is detachable, which facilitates the subsequent disassembly of the annular blade 3 and the inspection and maintenance of the cylinder 601 and the air pipe connector 9.

[0037] Reference Figure 4 and Figure 5After the annular blade 3 is installed on the cutter shaft 2, when making unequal distance adjustments, first start the cylinder 601. The piston rod of the cylinder 601 retracts and drives the support plate 602. The support plate 602 simultaneously drives the limiting block 603 away from the guide block 5 until the limiting block 603 is completely disengaged from the guide block 5 and no longer restricts the guide block 5. Then, according to the specifications to be cut from the metal sheet, push the annular blade 3 along the axis of the cutter shaft 2 to adjust the distance between each annular blade 3. At the same time, it is also necessary to ensure that after the annular blade 3 moves, the guide block 5... The position and the distance between the limit block 603 correspond to each other. After the adjustment is completed, the cylinder 601 is started again, so that the piston rod of the cylinder 601 extends and pushes the support plate 602. The support plate 602 drives the limit block 603 to approach the guide block 5 until the side of the guide block 5 that is close to the support plate 602 abuts against the support plate 602, fixing the annular blade 3. At the same time, the adjacent limit block 603 engages and limits the guide block 5 to prevent the annular blade 3 from circumferentially offset from the cutter shaft 2 during the rotation.

[0038] Reference Figure 6 The transmission assembly 8 includes a push rod 801 and a first wedge block 802. The push rod 801 is slidably connected to the cutter shaft 2, with one end facing the support plate 602 and the other end fixedly connected to the first wedge block 802, used to transmit the thrust of the support plate 602, thereby pushing the first wedge block 802. The first wedge block 802 is fixedly connected to the end of the push rod 801 away from the support plate 602, used to push the equidistant adjustment assembly 7, causing the equidistant adjustment assembly 7 to lock the annular blade 3. After the unequal-distance adjustment assembly 6 unlocks the annular blade 3, the cylinder 601 continues to retract a certain distance. As the support plate 602 continues to move away from the guide block 5, the support plate 602 and the end of the push rod 801 away from the first wedge block 802 abut against and push the push rod 801, causing the push rod 801 to synchronously push the first wedge block 802. The first wedge block 802 drives the equidistant adjustment assembly 7, causing the equidistant adjustment assembly 7 to lock the annular blade 3.

[0039] Reference Figure 6 , Figure 7 and Figure 8 The equidistant adjustment component 7 includes a handle 701, several telescopic components 702, and a locking component 703. A limiting hole 10 is provided on the annular blade 3. The handle 701 is rotatably connected to the cutter shaft 2, driving the several telescopic components 702 to move synchronously. Several telescopic components 702 are present, one set of which is linked to the handle 701, driving the annular blade 3 to move equidistantly. The locking component 703 is disposed on the telescopic components 702 and is adapted to the limiting hole 10 on the annular blade 3, locking the annular blade 3 to achieve the equidistant adjustment action. It can also be driven by the first wedge block 802 in the transmission component 8 to lock and unlock the annular blade 3.

[0040] Reference Figure 6 , Figure 7 and Figure 8 After the unequal distance adjustment component 6 unlocks the annular blade 3, the cylinder 601 continues to contract and drives the support plate 602 away from the guide block 5, causing the support plate 602 to push the push rod 801. The push rod 801 simultaneously drives the first wedge block 802 to approach the locking component 703, and drives the locking component 703 through the first wedge block 802, so that the locking component 703 enters the limiting hole 10 of the annular blade 3 to limit and fix the annular blade 3, ensuring that the annular blade 3 will not deviate during the unequal distance adjustment process.

[0041] Reference Figure 6 and Figure 8 The cutter shaft 2 is equipped with a positioning shaft 14, and a positioning ring 15 is fixedly connected to the positioning shaft 14. A fastening nut 16 is also provided on the positioning shaft 14. The positioning shaft 14 is fixedly connected to the cutter shaft 2 and provides a mounting base for the handle 701, allowing the handle 701 to rotate around the axis of the positioning shaft 14. The handle 701 is rotatably connected to the positioning shaft 14. In this embodiment, the handle 701 is V-shaped, and the rotatable connection between the handle 701 and the positioning shaft 14 is the turning point of the handle 701. The positioning ring 15 is used to restrict the handle 701 and prevent the handle 701 from displacing along the axis of the positioning shaft 14. The fastening nut 16 is threaded onto the positioning shaft 14 and is used to tightly abut against the handle 701 after tightening. Together with the positioning ring 15, it forms a double limit, preventing the handle 701 from rotating without human operation during the rotation of the cutter shaft 2, which would drive the first connecting rod 7021 and the second connecting rod 7022, causing a change in the distance between the annular blades 3.

[0042] Reference Figure 6 and Figure 8 When driving the telescopic component 702, loosen the fastening nut 16 to release the limit on the handle 701, and then rotate the handle 701. The handle 701 rotates around the axis of the positioning shaft 14 and drives the telescopic component 702 rotatably connected to the handle 701. Since the telescopic components 702 are interconnected, the handle 701 drives the telescopic components 702.

[0043] Reference Figure 6 , Figure 7 and Figure 8 The telescopic assembly 702 includes a first connecting rod 7021 and a second connecting rod 7022. A first slider 11 is rotatably connected to the middle position of both the first connecting rod 7021 and the second connecting rod 7022. A second slider 12 is rotatably connected to the side of the first connecting rod 7021 and the second connecting rod 7022 away from the first slider 11. A second sliding groove 18 is provided on the second slider 12, and a limit groove 19 is provided on the cutter shaft 2.

[0044] Reference Figure 6 , Figure 7 and Figure 8 In this mechanism, one end of the first link 7021 is rotatably connected to one end of the second link 7022 via a pin, forming a foldable linkage mechanism. In two adjacent sets of telescopic components 702, the end of the second link 7022 in one set away from the first link 7021 is rotatably connected to the end of the first link 7021 in the other set away from the second link 7022 via a pin, thereby realizing the linkage of multiple sets of telescopic components 702. Furthermore, the end of the first link 7021 in one set of telescopic components 702, away from the second link 7022, is rotatably connected to the handle 701, enabling the handle 701 to drive the telescopic component 702. The first slider 11 is slidably connected to the cutter shaft 2 via a limiting groove 19, and the first slider 11 is used to limit the first link... The moving direction of rod 7021 and second connecting rod 7022; the second slider 12 is slidably connected to the cutter shaft 2, and the second slider 12 is used to provide an installation base for the locking assembly 703; the second slide groove 18 is opened in the middle position of the second slider 12 to guide the sliding of the first wedge block 802, and at the same time, it can also avoid the first wedge block 802 interfering with the second slider 12 when driving the locking assembly 703, ensuring smooth transmission of the first wedge block 802; in this embodiment, the limiting groove 19 is T-shaped, and similarly, the first slider 11 is also T-shaped. The first slider 11 slides with the limiting groove 19 to prevent the first connecting rod 7021 and the second connecting rod 7022 from disengaging from the sliding engagement with the cutter shaft 2 during the pushing process.

[0045] Reference Figure 6 , Figure 7 and Figure 8 When the locking component 703 locks the annular blade 3, and the telescopic component 702 is driven, the fastening nut 16 is loosened to release the limit on the handle 701. Then, the handle 701 is rotated, and the handle 701 rotates around the axis of the positioning shaft 14, driving the first connecting rod 7021 rotatably connected to one end thereto. Under the push of the handle 701 and the restriction of the first slider 11, the first connecting rod 7021 moves along the axis of the blade shaft 2, and drives the second slider 12 set on the first connecting rod 7021 to move synchronously. At the same time, the first connecting rod 7021... 21 also drives the second connecting rod 7022, which is rotatably connected to one end of it. Under the push of the first connecting rod 7021 and the restriction of the first slider 11, the second connecting rod 7022 moves along the axis of the cutter shaft 2 and drives the second slider 12 set on the second connecting rod 7022 to move. In this way, multiple sets of telescopic components 702 are linked synchronously. The first connecting rod 7021 and the second connecting rod 7022 in the other telescopic components 702 respectively drive the corresponding second slider 12 to move, and finally realize the equidistant adjustment of the annular blade 3.

[0046] Reference Figure 6 , Figure 9 and Figure 10The locking assembly 703 includes a limit rod 7031, a baffle 7032, a spring 7033, and a second wedge block 7034. A first sliding groove 13 is provided on the cutter shaft 2.

[0047] Reference Figure 6 , Figure 9 and Figure 10 The limiting rod 7031 is slidably connected to the second slider 12 and has a clearance fit with the limiting hole 10. It slides in a direction perpendicular to the axis of the cutter shaft 2 to lock the annular blade 3 into the limiting hole 10. The baffle 7032 is welded and fixed to the limiting rod 7031. It abuts against the spring 7033 and provides a mounting base for the spring 7033. It also transmits the elastic force of the spring 7033 to drive the limiting rod 7031 to slide. The spring 7033 is sleeved on the limiting rod 7031. Its initial state is naturally extended. One end of the spring 7033 is located on the side of the baffle 7032 away from the second wedge block 7034. The other end of 33 is located on the inner wall of the second slider 12, which is used to push the baffle 7032 and the limiting rod 7031 to reset, so that the limiting rod 7031 disengages from the limiting hole 10 and releases the lock on the annular blade 3; the second wedge block 7034 is located at the end of the limiting rod 7031 away from the limiting hole 10, and the second wedge block 7034 slides in contact with the wedge surface of the first wedge block 802, which is used to transmit the thrust of the first wedge block 802 and thus push the limiting rod 7031 into the limiting hole 10; the first slide groove 13 is opened on the cutter shaft 2, corresponding to the position of the limiting rod 7031, and is used to allow the limiting rod 7031 to slide along the axial direction of the cutter shaft 2.

[0048] Reference Figure 6 , Figure 9 and Figure 10 During equidistant adjustment, after releasing the restriction on the guide block 5, the cylinder 601 continuously contracts and drives the support plate 602 until the support plate 602 and the end of the push rod 801 away from the first wedge block 802 come into contact. As the cylinder 601 continues to contract, the support plate 602 pushes the push rod 801 to slide in a direction perpendicular to the axis of the cutter shaft 2. The push rod 801 pushes the first wedge block 802, and the wedge-shaped surfaces of the first wedge block 802 and the second wedge block 7034 slide in contact. Under the push of the first wedge block 802, the second wedge block 7034 is driven... The limiting rod 7031 moves toward the limiting hole 10. During the movement, the limiting rod 7031 simultaneously drives the baffle 7032, which compresses the spring 7033, keeping the spring 7033 in a compressed state, until the limiting rod 7031 enters the limiting hole 10 in the annular blade 3 and tightly abuts against the inner wall of the annular blade 3, thus locking the annular blade 3. Then, the cylinder 601 stops contracting and maintains this contracted state, ensuring that the limiting rod 7031 continuously locks the annular blade 3, providing a stable foundation for subsequent equidistant adjustment.

[0049] The implementation principle of the adjustable blade shearing machine in this application embodiment is as follows: When performing unequal-distance cutting of metal sheets, firstly, cylinder 601 is activated. The piston rod of cylinder 601 retracts and drives support plate 602. Support plate 602 drives limit block 603 to move synchronously away from guide block 5, thereby releasing the restriction on guide block 5. Then, according to the cutting requirements, the annular blade 3 is pushed so that the annular blade 3 moves along the axial direction of the cutter shaft 2. At the same time, it is necessary to ensure that after the annular blade 3 moves, the position of guide block 5 and the distance between limit block 603 correspond. After adjustment, cylinder 601 is activated. The piston rod of cylinder 601 extends and pushes support plate 602. 02 drives the limiting block 603 to move synchronously, gradually approaching the guide block 5 until the support plate 602 abuts against the guide block 5. At this time, the cylinder 601 stops extending, and the guide block 5 is restricted by the abutment of the support plate 602 and the two adjacent limiting blocks 603, thereby fixing the annular blade 3 on the cutter shaft 2. Then the shearing machine starts to drive the cutter shaft 2 to rotate and cut the metal plate. Since the air pipe connector 9 set on one side of the protective plate 17 is a rotary air pipe connector 9, which is connected to the air supply pipe, and the rotary air pipe connector 9 can rotate freely relative to the protective plate 17, the air pipe connector 9 rotates synchronously with the cutter shaft 2 and maintains a stable connection with the air supply pipe, avoiding the air supply pipe from getting tangled.

[0050] When cutting metal sheets at equal intervals, and the moving distance of the annular blade 3 does not conform to the spacing between the limiting blocks 603, first activate cylinder 601, causing the piston rod of cylinder 601 to retract and drive the support plate 602 to move. Simultaneously, the support plate 602 drives the limiting blocks 603 away from the guide block 5 until the limiting blocks 603 no longer contact the guide block 5, thus releasing the restriction of the unequal distance adjustment component 6 on the annular blade 3. Then, push the annular blade 3, causing it to slide along the axis of the cutter shaft 2 until the limiting hole 10 on the annular blade 3 aligns with the limiting rod 7031. Next, activate cylinder 601 again, causing the piston rod of cylinder 601 to continuously retract, causing the side of the support plate 602 away from the limiting block 603 to align with the pushing... Rod 801 abuts against and pushes push rod 801. Push rod 801 drives first wedge block 802 to move synchronously towards second wedge block 7034. Guided by second slide groove 18, first wedge block 802 abuts against the wedge-shaped surface of second wedge block 7034 and pushes second wedge block 7034, causing second wedge block 7034 to push limiting rod 7031 towards limiting hole 10. During the process of limiting rod 7031 being pushed, baffle 7032 is driven synchronously, and baffle 7032 continuously compresses spring 7033, causing spring 7033 to be compressed. As cylinder 601 continues to contract, limiting rod 7031 is pushed into limiting hole 10 until limiting rod 7031 is inside annular blade 3. When the wall abuts, the cylinder 601 stops contracting, and the annular blade 3 is firmly locked onto the second slider 12 by the limiting rod 7031. After the annular blade 3 is locked, the fastening nut 16 is loosened, and the handle 701 is rotated. The handle 701 rotates around the axis of the positioning shaft 14, thereby pushing the first connecting rod 7021 rotatably connected to one end of it. Under the push of the handle 701 and the restriction of the first slider 11, the first connecting rod 7021 moves along the axis of the cutter shaft 2. At the same time, the first connecting rod 7021 pushes the second connecting rod 7022 rotatably connected to the other end of it. The second connecting rod 7022 also slides along the axis of the cutter shaft 2 under the push of the first connecting rod 7021 and the restriction of the first slider 11. The included angle between the first link 7021 and the second link 7022 increases or decreases as the handle 701 rotates clockwise or counterclockwise, thereby enabling the extension or retraction of several telescopic components 702. Simultaneously, the first link 7021 and the second link 7022 drive the first slider 11 to move, while also driving the second slider 12, which in turn drives the limiting rod 7031 and the annular blade 3. This causes several limiting rods 7031 to move along the first slide groove 13, and several annular blades 3 to move synchronously and equidistantly along the axis of the cutter shaft 2. After adjustment, tighten the fastening nut 16 to fix the handle 701 on the positioning shaft 14, preventing the included angle between the first link 7021 and the second link 7022 from changing during the rotation of the cutter shaft 2.

[0051] When switching from equidistant adjustment to unequal adjustment component 6, first activate cylinder 601. The piston rod of cylinder 601 extends, causing support plate 602 and limit block 603 to move away from push rod 801. Without the push of support plate 602, push rod 801 no longer presses the second wedge block 7034 through the first wedge block 802. At this time, spring 7033 is no longer compressed, returns to its natural extension state, and releases its elastic force to push baffle 7032. Baffle 7032 simultaneously drives limit rod 7031, causing limit rod 7031 to disengage from limit hole 10, releasing the restriction on annular blade 3. At the same time, limit rod 7031 pushes... The second wedge block 7034 is reset, and the second wedge block 7034 slides in a wedge shape with the first wedge block 802, thereby pushing the first wedge block 802 and the push rod 801 to reset. Then, according to the cutting needs, the annular blade 3 is pushed. At the same time, it is necessary to ensure that after the annular blade 3 moves, the position of the guide block 5 corresponds to the distance between the limit block 603. After the adjustment is completed, the cylinder 601 is started again. The cylinder 601 pushes the support plate 602 and the limit block 603 to restrict the guide block 5, that is, to release the equidistant adjustment restriction on the annular blade 3 and realize the unequal adjustment.

[0052] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shearing machine with adjustable blades, comprising a frame (1) and a cutter shaft (2) rotatably connected to the frame (1), characterized in that: A plurality of annular blades (3) are slidably connected on the cutter shaft (2). A guide groove (4) is provided on the cutter shaft (2). Each of the plurality of annular blades (3) is provided with a guide block (5) that slides with the guide groove (4). An unequal distance adjustment component (6) for adjusting and locking the plurality of annular blades (3) is provided on the cutter shaft (2). An equidistant adjustment component (7) for driving the plurality of annular blades (3) to move synchronously and equidistantly along the axial direction of the cutter shaft (2) is also provided on the cutter shaft (2). A transmission component (8) is provided on the cutter shaft (2). When the unequal distance adjustment component (6) unlocks the annular blades (3), the transmission component (8) is driven by the unequal distance adjustment component (6) and pushes the equidistant adjustment component (7) to lock the annular blades (3).

2. The blade-adjustable shearing machine according to claim 1, characterized in that: The unequal distance adjustment assembly (6) includes a cylinder (601) mounted on the cutter shaft (2), a support plate (602) mounted on the free end of the piston rod of the cylinder (601), and a plurality of limiting blocks (603) mounted on the side of the support plate (602) away from the cylinder (601). The guide block (5) abuts against two adjacent limiting blocks (603). One end of the cutter shaft (2) is provided with an air pipe connector (9) for supplying air to the cylinder (601).

3. The blade-adjustable shearing machine according to claim 1, characterized in that: The transmission assembly (8) includes a push rod (801) slidably connected to the cutter shaft (2) and a first wedge block (802) disposed at one end of the push rod (801). The end of the push rod (801) away from the first wedge block (802) is used to abut against the support plate (602).

4. The blade-adjustable shearing machine according to claim 1, characterized in that: The equidistant adjustment assembly (7) includes a handle (701) rotatably connected to the cutter shaft (2), several telescopic assemblies (702) set on the cutter shaft (2) and linked with the handle (701) for driving the annular blade (3) to move at equal distances, and a locking assembly (703) set on the telescopic assembly (702) for locking the annular blade (3). Each of the annular blades (3) is provided with a limiting hole (10) through which the locking assembly (703) passes.

5. A shearing machine with adjustable blades according to claim 4, characterized in that: Each of the aforementioned telescopic components (702) includes a first connecting rod (7021) and a second connecting rod (7022) rotatably connected to one end of the first connecting rod (7021). In two adjacent sets of telescopic components (702), the end of the second connecting rod (7022) of one set away from the first connecting rod (7021) is rotatably connected to the end of the first connecting rod (7021) of the other set away from the second connecting rod (7022), thereby achieving synchronous linkage of the aforementioned telescopic components (702). The first link (7021) is rotatably connected to the handle (701) at the end away from the second link (7022). The first slider (11) is rotatably connected to the middle of the first link (7021) and the second link (7022). The first slider (11) is slidably connected to the cutter shaft (2). The second slider (12) is rotatably connected to the side of the first link (7021) and the second link (7022) away from the first slider (11). The second slider (12) is slidably connected to the cutter shaft (2).

6. A blade-adjustable shearing machine according to claim 4, characterized in that: The locking assembly (703) includes a limiting rod (7031) slidably connected in the second slider (12), a baffle (7032) fixedly connected to the limiting rod (7031), a spring (7033) sleeved on the limiting rod (7031), and a second wedge block (7034) disposed at one end of the limiting rod (7031). The limiting rod (7031) is clearance-fitted with the limiting hole (10). The second wedge block (7034) slides against the wedge surface of the first wedge block (802). One end of the spring (7033) is disposed on the inner wall of the second slider (12), and the other end of the spring (7033) is disposed on the side of the baffle (7032) away from the first wedge block (802). The cutter shaft (2) is also provided with a first groove (13) for the limiting rod (7031) to slide radially along the cutter shaft (2).

7. A blade-adjustable shearing machine according to claim 4, characterized in that: The cutter shaft (2) is provided with a positioning shaft (14), and the handle (701) is rotatably connected to the positioning shaft (14). The positioning shaft (14) is provided with a positioning ring (15) for limiting the handle (701). The positioning shaft (14) is also threadedly connected with a fastening nut (16), and the fastening nut (16) abuts against the side of the handle (701) away from the positioning ring (15).

8. A shearing machine with adjustable blades according to claim 2, characterized in that: One end of the cutter shaft (2) is fixedly connected to a protective plate (17), and the air pipe connector (9) is located at the axial position of the protective plate (17).

9. A shearing machine with adjustable blades according to claim 5, characterized in that: The second slider (12) has a second groove (18) at the middle position for guiding the first wedge block (802) to slide.

10. A blade-adjustable shearing machine according to claim 5, characterized in that: A limiting groove (19) is provided on the cutter shaft (2), and the first slider (11) slides in cooperation with the limiting groove (19).

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