Intelligent punching and shearing device of numerical control angle steel combined production line

Abstract

The application belongs to the technical field of angle steel processing, and discloses a numerical control angle steel combined production line intelligent punching and shearing device, which comprises a punching and shearing machine tool body, an auxiliary feeding machine tool body is installed on the punching and shearing machine tool body, an angle steel shearing guide rail is installed in the punching and shearing machine tool body, a pair of punching hydraulic cylinders are installed in the punching and shearing machine tool body, and punch heads are fixedly connected to the output ends of the pair of punching hydraulic cylinders. By setting the shearing cutter as a non-standard hexagon and setting the upper and lower shearing angles as round angles, the shape of the shearing cutter is matched with the arc transition area and the two-wing plane height of the root of the light round angle steel, and when shearing, the round shearing angle can be uniformly cut into along the round angle contour of the angle steel, so that the crushing, tearing or stepped burr caused by the traditional right-angle cutter head to the round angle root is avoided, the original round angle appearance and stress dispersion function of the angle steel are completely retained, and the setting of the round angle can also reduce the damage speed of the shearing cutter tip.

Description

Technical Field

[0001] This invention belongs to the field of angle steel processing technology, specifically an intelligent punching and shearing device for a CNC angle steel integrated production line. Background Technology

[0002] In applications such as photovoltaic brackets and communication towers where weight requirements are critical, lightweight rounded angle steel is needed. Lightweight rounded angle steel is a metal profile with an L-shaped cross-section, a wider and thicker side than ordinary angle steel (meaning a thinner wall thickness for the same side width), and a rounded corner at the root. It combines lightweight and rounded corner characteristics, offering dual advantages. Common side widths range from 20mm to 30mm, and side thicknesses are mostly 1.0mm to 3.0mm, resulting in a weight reduction of approximately 15% to 30% compared to ordinary angle steel of the same specifications. Its rounded corner design eliminates stress concentration; by replacing sharp right-angle turns with rounded transitions, the force distribution under external forces is more uniform, reducing peak stress by 30% to 50%, effectively suppressing the generation and propagation of fatigue cracks, and improving structural stiffness. The rounded corners increase the metal filling area at the root of the cross-section, improving bending and torsional moments of inertia, making the thin-walled angle steel less prone to local buckling under stress.

[0003] However, because lightweight rounded angle steel is thinner overall and its corners are rounded, traditional shearing blades, which use right-angle or flat-edged blades, do not match the roundness of the lightweight rounded angle steel. During shearing, the straight blade first contacts the tangent point of the rounded corner, i.e., the junction of the rounded edge and the straight edge, instead of pressing evenly into the material. This causes the root of the rounded corner to be subjected to lateral compression and collapse inward. The blade head directly impacts the rounded corner area, crushing the originally smooth rounded contour or cutting it into stepped burrs. The cut surface loses the stress-dispersing function of the rounded corner and leaves micro-cracks at the cut, seriously affecting the fatigue resistance of the angle steel. Regarding performance and reliability in subsequent use, traditional right-angle blades exhibit significant geometric singularities and stress concentration effects during shearing due to the near-zero geometric radius of curvature at the blade tip. Under shear loads, the force lines converge violently towards the tip, causing the theoretical local stress at that point to approach infinity. The actual peak stress can reach several to tens of times the average stress. Simultaneously, micro-cracks inevitably exist at the right-angle tip under microscopic conditions. These micro-cracks expand rapidly under ultra-high stress, eventually leading to brittle fracture of the blade tip, ultimately requiring frequent replacement of the shearing blade. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent punching and shearing device for a CNC angle steel production line to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A smart punching and shearing device for a CNC angle steel production line includes a punching and shearing machine body, an auxiliary feeding machine body, an angle steel shearing guide rail installed inside the punching and shearing machine body, a pair of punching hydraulic cylinders installed inside the punching and shearing machine body, punches fixedly connected to the output ends of the pair of punching hydraulic cylinders, and a shearing assembly provided inside the punching and shearing machine body. The shearing assembly includes a shearing hydraulic cylinder fixedly connected inside the punching and shearing machine body. The output end of the shearing hydraulic cylinder is fixedly connected to a fixed mounting plate by multiple bolts. Both ends of the fixed mounting plate are fixedly connected to auxiliary mounting plates by multiple bolts. A cutter mounting sleeve is fixedly connected to the lower end of the fixed mounting plate. A shearing blade is fixedly connected to the inside of the cutter mounting sleeve by bolts. A sliding sleeve is fixedly connected to the middle of each of the two auxiliary mounting plates. A sliding rod is slidably connected to the inside of each of the two sliding sleeves. A buffer spring is installed inside the sliding sleeve. A receiving mounting plate is fixedly connected to the lower end of each of the two receiving mounting plates. A double-sided extrusion block is installed at the lower end of each of the two receiving mounting plates by bolts.

[0006] Preferably, the overall shape of the shearing blade is non-standard hexagonal, the length of the left and right sides of the shearing blade is between 15mm and 30mm, the upper and lower shearing corners of the shearing blade are rounded, and all six sides of the shearing blade are sharpened.

[0007] Preferably, both sides of the shearing blade are fixedly connected with grinding blocks, and the middle of the shearing blade is provided with a pair of elongated bolt mounting holes and a pair of circular internal thread holes, and the middle of each pair of grinding blocks is provided with a pair of elongated bolt mounting holes and a pair of circular internal thread holes.

[0008] Preferably, the inside of the cutter mounting sleeve is provided with a triangular groove for disassembling and assembling the shearing blade.

[0009] Preferably, the overall shape of the double-sided extrusion block is an inverted trapezoid, the two inclined surfaces of the double-sided extrusion block are set at an opening angle of 90 degrees, and a grinding disc is fixedly connected to both inclined surfaces of the double-sided extrusion block; Preferably, the center of the double-sided extrusion block is provided with a strip-shaped through hole that mates with a pair of punches.

[0010] Preferably, the angle steel shearing guide rail has a rectangular through hole in the middle for the shearing blade to pass through, and the angle steel shearing guide rail also has a pair of circular through holes in the middle for the punch to pass through, and the pair of circular through holes are arranged at 90 degrees to each other.

[0011] Preferably, the sliding sleeve has a cross groove inside that is used to limit the sliding movement of the sliding rod, and the upper end of the sliding rod is fixedly connected to a cross protrusion that is used to limit the sliding movement of the cross groove.

[0012] The beneficial effects of this invention are as follows: 1. This invention sets the shearing blade to a non-standard hexagon with rounded corners at the top and bottom, making its shape closely match the arc transition area at the root of the lightweight rounded angle steel and the height of the two wing planes. During shearing, the rounded shearing corners can cut evenly along the rounded contour of the angle steel, avoiding crushing, tearing, or step-like burrs caused by traditional right-angle blades to the root of the rounded corners. This completely preserves the original rounded shape and stress dispersion function of the angle steel. At the same time, the rounded corners can also reduce the speed of damage to the shearing blade tip.

[0013] 2. The present invention limits the length of the shearing blade to 15mm to 30mm on both sides. This range matches the common side width of 20mm to 30mm for lightweight rounded angle steel, ensuring the effective contact length between the blade and the flange of the angle steel. This avoids incomplete shearing due to an excessively short blade or interference due to an excessively long blade. Furthermore, the grinding blocks on the side wall can be used to thoroughly grind the cut during shearing, reducing burrs and micro-protrusions generated after shearing.

[0014] 3. This invention features a shear blade with all six sides being sharpened, enabling it to perform multi-directional shearing. When one blade wears out, its installation position can be changed to use other blades to continue working, eliminating the need to immediately replace the entire blade. This significantly extends the total service life of a single shear blade and reduces mold costs and downtime for replacement.

[0015] 4. The present invention uses a double-sided extrusion block with an inverted trapezoidal structure and two inclined surfaces opening at an angle of 90 degrees, which forms a complete fit with the two vertical inner walls of the angle steel; By using two double-sided extrusion blocks in conjunction with the punch, the two inclined surfaces of the double-sided extrusion blocks apply clamping force from the inside to the outside simultaneously, fixing the two wings of the angle steel at a standard 90 degrees. The double-sided extrusion provides rigid support below the punching position, so that the impact force of the punch is evenly distributed to the two vertical surfaces. Before punching, pre-stress is applied to the surrounding material to prevent bulging or denting around the hole in thin-walled areas with a wall thickness of only 1.0 to 3.0 mm. With the help of two double-sided extrusion blocks and shearing blades, the double-sided extrusion blocks contact the angle steel first and apply a uniform pre-compression force from the inside to the outside, firmly opening and fixing the two wings of the angle steel at the standard 90 degrees. This effectively prevents the two wings of the angle steel from deforming inward or outward due to the impact force during shearing, and ensures the vertical accuracy of the angle steel after shearing. By using two double-sided extrusion blocks to press down in conjunction with an auxiliary feeding machine, when the auxiliary feeding machine drives the angle steel to advance along the length direction, the two vertical inner walls of the angle steel generate continuous relative sliding friction with the grinding discs fixed on the inclined surface of the double-sided extrusion blocks, and the friction direction is perpendicular to the angle steel's advancing direction, which can more thoroughly remove longitudinal burrs and micro protrusions distributed along the length direction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the front view of the main body of the punching and shearing machine tool of the present invention; Figure 3 This is a schematic diagram of the overall structure of the angle steel shearing guide rail of the present invention; Figure 4 This is a schematic cross-sectional view of the angle steel shearing guide rail of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the shearing component of the present invention; Figure 6 This is a schematic diagram of the overall structure of the shearing blade of the present invention; Figure 7 This is a schematic cross-sectional view of the sliding sleeve structure of the present invention; Figure 8 This is a cross-sectional view of the cutting tool mounting sleeve of the present invention; Figure 9 This is a schematic diagram of the overall structure of the double-sided extrusion block of the present invention.

[0017] In the diagram: 1. Main body of the punching and shearing machine; 2. Auxiliary feeding machine; 3. Angle steel shearing guide rail; 4. Punching hydraulic cylinder; 5. Punch; 6. Shearing assembly; 601. Fixed mounting plate; 602. Auxiliary mounting plate; 603. Cutter mounting sleeve; 604. Shearing blade; 605. Sliding sleeve; 606. Sliding rod; 607. Buffer spring; 608. Receiving mounting plate; 609. Double-sided extrusion block; 610. Shearing hydraulic cylinder. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 9 As shown, this embodiment of the invention provides an intelligent punching and shearing device for a CNC angle steel production line, including a punching and shearing machine body 1, an auxiliary feeding machine 2 installed on the punching and shearing machine body 1, an angle steel shearing guide rail 3 installed inside the punching and shearing machine body 1, a pair of punching hydraulic cylinders 4 installed inside the punching and shearing machine body 1, punches 5 fixedly connected to the output ends of the pair of punching hydraulic cylinders 4, and a shearing assembly 6 provided inside the punching and shearing machine body 1; The shearing assembly 6 includes a shearing hydraulic cylinder 610 fixedly connected inside the punching and shearing machine body 1. The output end of the shearing hydraulic cylinder 610 is fixedly connected to a fixed mounting plate 601 by multiple bolts. Both ends of the fixed mounting plate 601 are fixedly connected to auxiliary mounting plates 602 by multiple bolts. The lower end of the fixed mounting plate 601 is fixedly connected to a cutter mounting sleeve 603. The inside of the cutter mounting sleeve 603 is fixedly connected to a shearing blade 604 by bolts. The middle of the two auxiliary mounting plates 602 is fixedly connected to a sliding sleeve 605. The inside of the two sliding sleeves 605 is slidably connected to a sliding rod 606. A buffer spring 607 is installed inside the sliding sleeve 605. The lower ends of the two sliding rods 606 are fixedly connected to a receiving mounting plate 608. The lower ends of the two receiving mounting plates 608 are fixedly connected to a double-sided extrusion block 609 by bolts. The main body 1 of the punching and shearing machine in this solution is the existing fully automatic intelligent CNC punching and shearing machine. The fully automatic intelligent CNC punching and shearing machine is an angle steel profile processing equipment that highly integrates CNC punching and CNC shearing functions. It adopts computer control technology, servo drive technology and intelligent sensing technology, and can continuously complete multiple processes such as punching, forming and shearing in one clamping and one positioning, realizing automated processing from raw materials to finished parts; The auxiliary feeding machine tool 2 is an existing device. As an execution unit, the auxiliary feeding machine tool 2 is controlled by the CNC system of the main body of the fully automatic intelligent CNC punching and shearing machine tool. The two share the same control platform and follow strict timing interlock logic. When the fully automatic intelligent CNC punching and shearing machine tool is punching or shearing, the auxiliary feeding machine stops and clamps. After the main machine completes the action, the auxiliary feeding machine immediately starts to accurately transport the angle steel along the guide rail to the next station. In this design, both the punching hydraulic cylinder 4 and the shearing hydraulic cylinder 610 are electrically connected to the shearing machine body 1, and both the punching hydraulic cylinder 4 and the shearing hydraulic cylinder 610 are controlled by the CNC system of the shearing machine body 1.

[0020] The shearing blade 604 has a non-standard hexagonal shape. The length of the left and right sides of the shearing blade 604 is between 15mm and 30mm. The upper and lower shearing corners of the shearing blade 604 are rounded, and all six sides of the shearing blade 604 are sharpened. By setting the shearing blade 604 to a non-standard hexagonal shape with rounded top and bottom cutting angles, its shape closely matches the arc transition area at the root of the lightweight rounded angle steel and the height of the two wing planes. During shearing, the rounded cutting angle cuts evenly along the rounded contour of the angle steel, avoiding the crushing and tearing caused by traditional right-angle blades to the rounded root. It is adaptable to various sizes, and can be adapted to angle steels with a rounded chord length lower than that of the shearing blade 604. At the same time, the length of the left and right sides of the shearing blade 604 is limited to 15mm to 30mm, matching the common side width of lightweight rounded angle steel of 20mm to 30mm, ensuring the effective contact length between the blade and the flange of the angle steel. The hexagonal fully-edged design of the shearing blade 604 gives it multi-directional shearing capability. After one side of the blade wears out, the installation position can be changed to use other blades to continue working, extending the service life of a single blade.

[0021] Among them, both sides of the shearing blade 604 are fixedly connected with grinding blocks. The middle of the shearing blade 604 is provided with a pair of long bolt mounting holes and a pair of circular internal thread holes. The middle of each pair of grinding blocks is provided with a pair of long bolt mounting holes and a pair of circular internal thread holes. By fixing grinding blocks to both sides of the shearing blade 604, while the shearing blade 604 is falling to cut the angle steel, the grinding blocks generate relative friction with the cut surface, and promptly grind the burrs and small protrusions generated after shearing. This achieves integrated operation of simultaneous shearing and grinding, eliminating the need for a separate grinding process later.

[0022] The cutter mounting sleeve 603 has a triangular groove inside for disassembling and installing the shearing blade 604. A triangular groove is provided inside the cutter mounting sleeve 603 to facilitate the replacement of the shearing blade 604 later.

[0023] The overall shape of the double-sided extrusion block 609 is an inverted trapezoid. The two inclined surfaces of the double-sided extrusion block 609 are set at an opening angle of 90 degrees. Grinding discs are fixedly connected to both inclined surfaces of the double-sided extrusion block 609. By setting the double-sided extrusion block (609) to an inverted trapezoidal shape with the two inclined surfaces opening at a 90-degree angle, so that its lower end forms a flat surface instead of a sharp corner, it can adapt to thin and light rounded angle steel of different sizes. The constant 90-degree opening angle ensures that no matter whether the side length of the angle steel is 20mm or 30mm, the two inclined surfaces can automatically align with the two vertical inner walls of the angle steel and fit perfectly. On the other hand, the flat design at the lower end effectively avoids the arc transition area at the root of the angle steel, so that the inclined surface can directly press against the flat area of ​​the inner wall over the arc. As long as the width of the plane is greater than the chord length of the arc, it can be compatible with angle steel of different rounded radii. Therefore, it can adapt to thin and light rounded angle steel of common specifications without changing the extrusion block.

[0024] Among them, the middle of the double-sided extrusion block 609 is provided with a strip-shaped through hole that is matched with a pair of punches 5; By opening a strip-shaped through hole in the middle of the double-sided extrusion block 609, a through channel is provided for a pair of punches 5. During punching, the punches 5 pass through the strip-shaped through hole and then contact the surface of the angle steel to perform the punching operation.

[0025] Among them, the middle part of the angle steel shearing guide rail 3 is provided with a rectangular through hole for the shearing blade 604 to pass through, and the middle part of the angle steel shearing guide rail 3 is also provided with a pair of circular through holes for the punch 5 to pass through, and the pair of circular through holes are arranged at 90 degrees. By opening a rectangular through hole in the middle of the angle steel shearing guide rail 3, a guiding and clearance space is provided for the shearing blade 604, ensuring that the shearing blade 604 can accurately pass through the guide rail to complete the cutting action of the angle steel; by opening a pair of circular through holes that are intersected at 90 degrees in the middle of the angle steel shearing guide rail 3, the two punches 5 can respectively perform punching operations on the two vertical surfaces of the angle steel.

[0026] The sliding sleeve 605 has a cross groove inside that is used to slide and limit the sliding rod 606, and the upper end of the sliding rod 606 is fixedly connected to a cross protrusion that is used to slide and limit the sliding of the cross groove. A cross groove is formed inside the sliding sleeve 605, and a cross protrusion is fixedly connected to the upper end of the sliding rod 606, forming a sliding limiting fit. This structure ensures that the sliding rod 606 can only make linear reciprocating motion along the axial direction within the sliding sleeve 605, and cannot rotate circumferentially. This ensures that the pressing direction of the lower end receiving mounting plate 608 and the double-sided extrusion block 609 is always accurately aligned with the inner wall of the angle steel, avoiding pressure deviation or misalignment of the grinding disc caused by rotation.

[0027] Working principle and usage process: The lightweight rounded angle steel to be processed is clamped and conveyed by the auxiliary feeding machine tool 2. The auxiliary feeding machine tool 2, as the execution unit, is controlled by the CNC system of the main body of the fully automatic intelligent CNC punching and shearing machine tool. The two share the same control platform and follow strict timing interlock logic. The auxiliary feeding machine tool 2 conveys the angle steel forward along the angle steel shearing guide rail 3. When the angle steel reaches the predetermined position, the CNC system issues a command to stop the auxiliary feeding machine tool 2 from feeding and clamp the angle steel. At this time, the area of ​​the angle steel to be punched is exactly below the punch 5, and the area to be sheared is exactly below the shearing blade 604. During the punching operation, the CNC system controls a pair of punching hydraulic cylinders 4 to start simultaneously. The output ends of the two punching hydraulic cylinders 4 drive the punches 5 to move downwards. Since the middle of the angle steel shearing guide rail 3 has a pair of circular through holes arranged at 90 degrees, the two punches 5 pass through the corresponding circular through holes and then contact the two vertical surfaces of the angle steel from two vertical directions. During the downward pressing of the punches 5, the punches 5 first pass through the strip-shaped through hole in the middle of the double-sided extrusion block 609, and then contact the surface of the angle steel to punch. After punching is completed, the punching hydraulic cylinder 4 drives the punches 5 to move upwards back to their original position, waiting for the next punching command. During the shearing operation, the CNC system controls the shearing hydraulic cylinder 610 to start. The output end of the shearing hydraulic cylinder 610 moves downward through a fixed mounting plate 601 connected by multiple bolts. A cutter mounting sleeve 603 is fixedly connected to the lower end of the fixed mounting plate 601. A shearing blade 604 is fixedly connected inside the cutter mounting sleeve 603 through bolts. At the same time, the auxiliary mounting plate 602, which is fixedly connected to both ends of the fixed mounting plate 601 through bolts, also moves downward in sync. The sliding sleeve 605, which is fixedly connected to the middle of the auxiliary mounting plate 602, drives the sliding rod 606, the receiving mounting plate 608, and the double-sided extrusion block 609, which is bolted to the lower end of the receiving mounting plate 608, to move downward together. Since the double-sided extrusion block 609 is slidably connected to the sliding sleeve 605 via the sliding rod 606 and the buffer spring 607, and the lower end face of the double-sided extrusion block 609 is lower than the lower end face of the shearing blade 604, the double-sided extrusion block 609 contacts the angle steel before the shearing blade 604 during the overall descent of the shearing assembly 6. The overall shape of the double-sided extrusion block 609 is an inverted trapezoid, with the two inclined surfaces opening at an angle of 90 degrees, forming a surface contact with the two vertical inner walls of the lightweight rounded angle steel. When the double-sided extrusion block 609 contacts the angle steel and continues to descend, the double-sided extrusion block 609 applies a uniform pre-compression force to the two vertical inner walls of the angle steel from the inside to the outside, opening the two wings of the angle steel and fixing them in a standard 90-degree posture. At the same time, the sliding rod 606 slides upward relative to the sliding sleeve 605, compressing the buffer spring 607 installed inside the sliding sleeve 605. As the shearing hydraulic cylinder 610 continues to descend, the buffer spring 607 is further compressed. At this time, the shearing blade 604 continues to descend and passes through the rectangular through hole in the middle of the angle steel shearing guide rail 3, cutting the angle steel that has been pressed and fixed by the double-sided extrusion block 609. The overall shape of the shearing blade 604 is a non-standard hexagon, with rounded corners at both the top and bottom. During shearing, the rounded shearing corner cuts evenly along the rounded corner contour of the angle steel, avoiding crushing and tearing at the root of the rounded corner. All six sides of the shearing blade 604 are sharpened to ensure a sharp and smooth shearing action. After shearing is completed, the shearing hydraulic cylinder 610 drives the entire shearing assembly 6 to return to its original position, the buffer spring 607 returns to its original state, and pushes the sliding rod 606 and the double-sided extrusion block 609 to reset. As the shearing blade 604 falls and cuts the angle steel, the grinding blocks fixedly connected to both sides of the shearing blade 604 generate relative friction with the cut surface, instantly grinding the burrs and micro protrusions generated after shearing, achieving synchronous shearing and grinding. During the process of the auxiliary feeding machine 2 driving the angle steel to advance along the length direction, the two vertical inner walls of the angle steel generate continuous relative sliding friction with the grinding discs fixedly connected to the two inclined surfaces of the double-sided extrusion block 609. The friction direction is perpendicular to the angle steel's advancing direction, thereby simultaneously removing the longitudinal burrs and micro protrusions distributed along the length direction of the inner wall of the angle steel during the feeding process. The sliding sleeve 605 has a cross groove inside, and the upper end of the sliding rod 606 is fixedly connected to a cross protrusion. The two form a sliding limit fit to ensure that the sliding rod 606 can only make linear reciprocating motion along the axial direction in the sliding sleeve 605 and cannot rotate circumferentially. This ensures that the pressing direction of the double-sided extrusion block 609 is always accurately aligned with the inner wall of the angle steel. The triangular groove inside the cutter mounting sleeve 603 provides a force point for the disassembly tool when the shearing blade 604 needs to be replaced, which facilitates quick disassembly. Throughout the entire process, the CNC system controls the feeding action of the auxiliary feeding machine tool 2, the punching action of the punching hydraulic cylinder 4, and the shearing action of the shearing hydraulic cylinder 610 according to the preset program. The three follow a strict timing logic. After the material is fed into place, it stops and is clamped. First, the punching hydraulic cylinder 4 is started to complete the punching. After the punch 5 retracts, the shearing hydraulic cylinder 610 is started to complete the shearing. After the shearing is completed, the shearing blade 604 and the double-sided extrusion block 609 retract. The auxiliary feeding machine tool 2 starts again to convey the next section of angle steel. This cycle repeats to achieve continuous automatic punching and shearing processing of lightweight rounded angle steel.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent punching and shearing device for a CNC angle steel combined production line, characterized in that: The machine includes a punching and shearing machine body (1), an auxiliary feeding machine (2) is installed on the punching and shearing machine body (1), an angle steel shearing guide rail (3) is installed inside the punching and shearing machine body (1), a pair of punching hydraulic cylinders (4) are installed inside the punching and shearing machine body (1), and a punch (5) is fixedly connected to the output end of each pair of punching hydraulic cylinders (4). A shearing assembly (6) is provided inside the punching and shearing machine body (1). The shearing assembly (6) includes a shearing hydraulic cylinder (610) fixedly connected inside the punching and shearing machine body (1). The output end of the shearing hydraulic cylinder (610) is fixedly connected to a fixed mounting plate (601) by multiple bolts. Both ends of the fixed mounting plate (601) are fixedly connected to auxiliary mounting plates (602) by multiple bolts. The lower end of the fixed mounting plate (601) is fixedly connected to a cutter mounting sleeve (603). The inside of the cutter mounting sleeve (603) is fixedly connected to a shearing blade (604) by bolts. The middle of the two auxiliary mounting plates (602) is fixedly connected to a sliding sleeve (605). The inside of the two sliding sleeves (605) is slidably connected to a sliding rod (606). The inside of the sliding sleeves (605) is installed with a buffer spring (607). The lower ends of the two sliding rods (606) are fixedly connected to a receiving mounting plate (608). The lower ends of the two receiving mounting plates (608) are fixedly connected to a double-sided extrusion block (609) by bolts.

2. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 1, characterized in that: The shearing blade (604) has a non-standard hexagonal shape. The length of the left and right sides of the shearing blade (604) is between 15mm and 30mm. The upper and lower shearing corners of the shearing blade (604) are rounded. All six sides of the shearing blade (604) are sharpened.

3. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 2, characterized in that: Both sides of the shearing blade (604) are fixedly connected with grinding blocks. The middle of the shearing blade (604) is provided with a pair of long bolt mounting holes and a pair of circular internal thread holes. The middle of each pair of grinding blocks is provided with a pair of long bolt mounting holes and a pair of circular internal thread holes.

4. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 1, characterized in that: The cutter mounting sleeve (603) has a triangular groove inside for disassembling and installing the shearing blade (604).

5. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 1, characterized in that: The overall shape of the double-sided extrusion block (609) is an inverted trapezoid. The two inclined surfaces of the double-sided extrusion block (609) are set at an opening angle of 90 degrees. A grinding disc is fixedly connected to both inclined surfaces of the double-sided extrusion block (609).

6. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 5, characterized in that: The double-sided extrusion block (609) has a strip-shaped through hole in the middle for a pair of punches (5) to pass through.

7. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 1, characterized in that: The angle steel shearing guide (3) has a rectangular through hole in the middle for the shearing blade (604) to pass through. The angle steel shearing guide (3) also has a pair of circular through holes in the middle for the punch (5) to pass through. The pair of circular through holes are arranged at 90 degrees to cross each other.

8. The intelligent punching and shearing device for a CNC angle steel combined production line according to claim 1, characterized in that: The sliding sleeve (605) has a cross groove inside that is used to slide and limit the sliding rod (606), and the upper end of the sliding rod (606) is fixedly connected to a cross protrusion that is used to slide and limit the sliding of the cross groove.

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