A parallel sawing device for I-beams

Abstract

The application discloses an I-shaped steel parallel head sawing device and belongs to the technical field of I-shaped steel processing. The device comprises a base, a cutting machine is arranged on the base, two clamping plates are slidably arranged on the base, installation grooves are arranged on the side walls of the two clamping plates, a buffer mechanism and a polishing mechanism are arranged in each installation groove, the buffer mechanism comprises a jack hole arranged on the side wall of the installation groove, a top rod is horizontally slidably arranged in the jack hole, an elastic film is fixedly arranged on the side wall of the clamping plate away from the opening of the installation groove, the elastic film covers the jack hole, one end of the top rod is in abutment with the elastic film, and the other end of the top rod extends out of the installation groove. According to the scheme, the top rod and the elastic film are matched with each other, the I-shaped steel is first in abutment with the top rod when the I-shaped steel is axially fed, and the original rigid and hard impact on the clamping plate is converted into the flexible energy absorption and buffering of the elastic film. The positioning reference surface of the clamping plate is protected from fatigue wear, the cutting length cumulative error caused by the deformation of the positioning surface is prevented, and the long-term parallel head sawing precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of I-beam processing technology, and more specifically, to an I-beam end-cutting sawing device. Background Technology

[0002] In the fields of steel structure manufacturing and heavy machinery processing, I-beams, as core load-bearing and connecting components, directly determine the overall assembly quality and structural stability of subsequent engineering structures through the dimensional accuracy of their fixed-length cutting. In existing I-beam cutting technologies, mechanical limit blocks are typically installed at specific positions on the conveyor rollers. These limit blocks axially position the moving I-beam, and after positioning, a clamping mechanism locks it in place, allowing for end-to-end cutting.

[0003] However, in actual continuous production line operations, due to the significant weight and propulsive inertia of the I-beams, frequent and intense rigid collisions inevitably occur between the ends of the I-beams and the positioning faces of the limiting blocks as they are conveyed forward and pressed against the locating blocks. This long-term alternating impact force easily leads to localized stress overload on the contact surfaces of the limiting blocks. As the number of work cycles increases, the positioning faces of the limiting blocks are prone to plastic deformation and fatigue wear.

[0004] Once the positioning end face of the limit block experiences physical wear, its original geometric position changes, leading to a shift in the axial positioning reference of the entire cutting system. This reference shift often results in cumulative errors in the cutting length during continuous processing, causing poor dimensional consistency of the finished product and failing to meet the high-precision processing requirements of modern industry. Furthermore, frequent downtime for calibration or replacement of the limit block significantly increases equipment maintenance costs and reduces production efficiency. In addition, in space-constrained mobile or miniaturized prefabricated building processing sites, it is often impossible to configure a large end-face cleaning station independently. If secondary manual grinding is performed after sawing, it is difficult to guarantee the perpendicularity of the reference surface to the sawn surface.

[0005] To address this, a cutting device for I-beams with flush ends is proposed. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention aims to provide an I-beam end-cutting equipment, which integrates the in-situ grinding and slag removal process of the I-beam end face with the end-cutting process in a combined and parallel manner, thereby improving the overall accuracy of multi-process combined processing while protecting the positioning surface of the clamping plate.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An I-beam end-cutting device includes a base on which a cutting machine is mounted; Two clamping plates are slidably mounted on the base; The two clamps have mounting grooves on their adjacent side walls, and each mounting groove is equipped with a buffer mechanism and a grinding mechanism. The buffer mechanism includes an insertion hole opened in the side wall of the mounting slot, a push rod is horizontally slidably inserted in the insertion hole, an elastic membrane is fixedly installed on the side wall of the clamp plate away from the opening of the mounting slot, the elastic membrane covers the insertion hole, one end of the push rod abuts against the elastic membrane, and the other end of the push rod extends out of the mounting slot. The grinding mechanism includes a mounting ring with holes, and an annular limiting groove on the outer periphery of the push rod. The mounting ring is rotated and fitted into the limiting groove through the holes. Several storage holes are evenly opened along the circumference on the side wall of the mounting ring. A sliding plate is slidably installed in each storage hole, and an elastic element is installed between the sliding plate and the end face of the storage hole. An extension rod perpendicular to the top rod is fixedly installed on the surface of the skateboard. Elastic strips are evenly installed on the side wall of the extension rod, and metal brushes are fixedly installed on the surface of the elastic strips. Furthermore, the clamping plate is equipped with a drive mechanism for driving the installation to rotate around the top rod.

[0009] This allows the push rod to contact the I-beam first when the clamping plate holds the end of the I-beam, and then the elastic membrane provides cushioning to prevent the end of the I-beam from colliding with the clamping plate, thus protecting the clamping plate and improving the accuracy of subsequent processing.

[0010] Furthermore, a bracket is fixedly installed on the bottom wall of the base, and a bidirectional threaded rod is horizontally rotatably installed on the bracket. A through groove parallel to the bidirectional threaded rod is opened on the base. Two sliders are threaded on the bidirectional threaded rod. The tops of the two sliders pass through the through groove and are fixedly connected to the bottom wall of the corresponding clamping plate. A stepper motor is fixedly installed on the bottom wall of the base, and the output end of the stepper motor is fixedly connected to the rotating shaft of the bidirectional threaded rod.

[0011] Furthermore, the drive mechanism includes a mounting sleeve that is rotatably sleeved on the outer periphery of the push rod, and the mounting sleeve is coaxially fixedly mounted on the side wall of the mounting ring; An elastic sleeve is fixedly installed on the side wall of the mounting sleeve, and the outer ring of the elastic sleeve is provided with anti-slip texture. The drive mechanism also includes a drive motor, and a friction wheel is fixedly installed at the output end of the drive motor. The friction wheel and the anti-slip texture of the elastic sleeve are in frictional engagement.

[0012] Furthermore, a piston is slidably installed in the mounting groove, a push rod passes through the piston and is fixedly connected to the piston, and a drive motor is fixedly installed on the side wall of the piston.

[0013] Furthermore, a limit switch is fixedly installed on the clamp plate, and the contacts of the limit switch correspond to the axial movement trajectory of the push rod; the limit switch is configured to be triggered when the push rod is pressed and displaced inward to a set position, and the limit switch is electrically connected to the drive motor; The limit switch is configured to be triggered when the push rod is pressed and displaced inward to the set position, and to control the drive motor to cut off the power so that the slide plate and extension rod retract into the storage hole under the elastic restoring force of the elastic element.

[0014] Furthermore, an annular guide groove is provided on the side wall of the hole, and a U-shaped tube is fixedly embedded on the top rod; Both ends of the U-shaped tube extend to the surface of the push rod and are distributed on both sides of the piston. The end of the U-shaped tube located on the piston side closer to the mounting ring is connected to the guide groove. Each receiving hole has an air hole on its bottom wall that communicates with the guide groove; A conduit extending into the extension rod is fixedly inserted into the bottom wall of the slide plate. An air pipe extending into the outer wall of the extension rod is obliquely inserted into the side wall of the conduit. The exhaust end of the air pipe is oriented towards the processing area on the end face of the I-beam.

[0015] Furthermore, a metal brush is mounted on the surface of the elastic strip on the side of the extension rod away from the elastic membrane.

[0016] Furthermore, a limit ring is installed at the opening of the inner peripheral wall of each storage hole.

[0017] Furthermore, a first annular groove is provided on the inner peripheral wall of the socket, and an inner sealing ring is embedded in the first annular groove; A second annular groove is provided on the outer peripheral wall of the piston, and an outer sealing ring is embedded in the second annular groove; the edge of the elastic diaphragm is sealed and fixedly connected to the side wall of the clamping plate.

[0018] Furthermore, a guide groove is provided axially on the inner peripheral wall of the insertion hole, and a guide rod that matches the guide groove is fixedly embedded on the outer peripheral wall of the push rod; the guide rod is slidably installed in the guide groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution uses the top rod and the elastic membrane to work together so that the I-beam first comes into contact with the top rod when it is axially fed in, which transforms the original rigid impact on the clamping plate into the flexible energy absorption buffer of the elastic membrane, protecting the positioning reference surface of the clamping plate from fatigue wear, thereby preventing the cumulative error of the cutting length caused by the deformation of the positioning surface, and ensuring long-term end-to-end sawing accuracy.

[0020] (2) During the buffer stroke of the push rod retracting under pressure, the drive mechanism is synchronously triggered, using the centrifugal force of high-speed rotation to throw out the metal brush and dynamically clean the end face of the I-beam. At the critical position where the I-beam is about to be fully in place, the limit switch on the elastic diaphragm is triggered and the motor power is cut off, causing the centrifugal force to disappear instantly, and the elastic element then retracts the brush into the receiving hole. This eliminates the physical interference caused by the grinding mechanism to the final positioning, ensuring that the end face of the I-beam can directly and tightly fit with the side wall of the clamping plate.

[0021] (3) When the I-beam pushes the push rod, the compressed air generated by the piston moving backward in the mounting groove is guided by the U-shaped tube, guide groove and guide tube inside the push rod to finally be discharged from the air pipe on the outer wall of the extension rod. Since the exhaust end of the air pipe is oriented towards the grinding area on the end face of the I-beam, when the I-beam is pushed and positioned, the high-pressure airflow discharged by the piston axially is sprayed instantaneously and directionally towards the grinding point through the air pipe, which plays a role in in-situ slag removal and purging at the beginning of grinding, effectively preventing the accumulation and jamming of metal chips. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a front cross-sectional view of the base of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the combined structure of the clamping plate, top rod, inner sealing ring and guide rod of the present invention; Figure 6 This is a schematic cross-sectional view of the catheter of the present invention; Figure 7 This is a schematic diagram of the combined structure of the mounting sleeve, elastic sleeve, and mounting ring of the present invention.

[0023] Explanation of the labels in the diagram: 1. Base; 101. Cutting machine; 2. Clamping plate; 3. Mounting groove; 4. Top rod; 5. Elastic membrane; 6. Mounting ring; 7. Storage hole; 8. Slide plate; 9. Elastic element; 10. Extension rod; 11. Elastic strip; 12. Metal brush; 13. Bracket; 14. Bidirectional threaded rod; 15. Through groove; 16. Slider; 17. Stepper motor; 18. Mounting sleeve; 19. Elastic sleeve; 20. Drive motor; 21. Friction wheel; 22. Piston; 23. Limit switch; 24. Guide groove; 25. U-tube; 26. Air hole; 27. Conduit; 28. Air pipe; 29. ​​Limiting ring; 30. Inner sealing ring; 31. Outer sealing ring; 32. Guide rod. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please see Figures 1 to 7 A cutting device for I-beams, comprising a base 1, on which a cutting machine 101 is mounted; The equipment is configured as a multi-process combined processing device that integrates cutting and end face grinding; Two clamping plates 2 are slidably mounted on the base 1; The two clamping plates 2 are provided with mounting grooves 3 on their adjacent side walls, and each mounting groove 3 is provided with a buffer mechanism and a grinding mechanism. The buffer mechanism includes an insertion hole opened in the side wall of the mounting groove 3, a top rod 4 is horizontally slidably inserted in the insertion hole, an elastic membrane 5 is fixedly installed on the side wall of the clamping plate 2 away from the opening of the mounting groove 3, the elastic membrane 5 covers the insertion hole, one end of the top rod 4 abuts against the elastic membrane 5, and the other end of the top rod 4 extends out of the mounting groove 3. The grinding mechanism includes a mounting ring 6 with holes, and an annular limiting groove on the outer periphery of the push rod 4. The mounting ring 6 is rotatably fitted into the limiting groove through the holes. Several storage holes 7 are evenly opened along the circumferential direction on the side wall of the mounting ring 6. A sliding plate 8 is slidably installed in each storage hole 7. An elastic element 9 is installed between the sliding plate 8 and the end face of the storage hole 7. An extension rod 10 perpendicular to the top rod 4 is fixedly installed on the surface of the slide plate 8. Elastic strips 11 are evenly installed on the side wall of the extension rod 10. A metal brush 12 is fixedly installed on the surface of the elastic strip 11. Furthermore, the clamping plate 2 is equipped with a drive mechanism for driving the mounting ring 6 to rotate around the top rod 4, so that the cutting machine 101 and the grinding mechanism can be combined into a combined processing unit for collaborative operation on the base 1.

[0026] This equipment allows the push rod 4 to contact the I-beam first when the clamping plate 2 holds the end of the I-beam, and then the elastic membrane 5 provides buffering to prevent the end of the I-beam from colliding with the clamping plate 2, thus protecting the clamping plate 2 and improving the accuracy of subsequent processing.

[0027] A bracket 13 is fixedly installed on the bottom wall of the base 1. A bidirectional threaded rod 14 is horizontally rotatably installed on the bracket 13. A through groove 15 parallel to the bidirectional threaded rod 14 is opened on the base 1. Two sliders 16 are threadedly fitted on the bidirectional threaded rod 14. The top ends of the two sliders 16 pass through the through groove 15 and are fixedly connected to the bottom wall of the corresponding clamping plate 2 respectively. A stepper motor 17 is fixedly installed on the bottom wall of the base 1, and the output end of the stepper motor 17 is fixedly connected to the shaft of the bidirectional threaded rod 14.

[0028] Once the I-beam to be processed is transported to the designated processing station, the stepper motor 17, which is fixedly installed on the bottom wall of the base 1, is started first, and its output end drives the bidirectional threaded rod 14 to rotate horizontally on the bracket 13.

[0029] Since the sidewall of the through groove 15 opened on the base 1 can restrict the slider 16 from rotating synchronously with the bidirectional threaded rod 14, it can play a role in linear guidance and anti-rotation of the two sliders 16.

[0030] Under the transmission mechanism of the bidirectional reverse threaded pair, the two sliders 16 synchronously drive the corresponding clamping plates 2 to approach each other along the axial direction of the bidirectional threaded rod 14, thereby realizing the rapid and automatic centering and clamping of the symmetrical parts on both sides of the I-beam.

[0031] During the process of the I-beam being clamped on both sides and conveyed forward along the axial direction to press against the positioning reference, the end face of the I-beam first contacts the end of the top rod 4 that extends forward to the outside of the mounting groove 3.

[0032] As the I-beam continues to advance axially, its end face pushes the push rod 4 to overcome resistance and slide inward horizontally within the insertion hole.

[0033] When the push rod 4 slides inward, its other end directly presses against the elastic membrane 5, which is fixedly installed on the side wall of the clamping plate 2 away from the opening of the mounting groove 3. The elastic deformation generated by the elastic membrane 5 covering the insertion hole and being compressed transforms the rigid collision caused by the advancement of the I-beam into a flexible energy-absorbing buffer.

[0034] This prevents hard impact between the end of the I-beam and the rigid structure of the clamping plate 2, protects the clamping plate 2 from fatigue wear, avoids displacement of the positioning reference, and improves the positioning dimensional accuracy of subsequent processing.

[0035] As the push rod 4 retracts under pressure to perform a buffering action, the mounting ring 6 rotates and fits into the annular limiting groove on the outer circumference of the push rod 4 through its central hole. When the push rod 4 slides horizontally in the axial direction, the mounting ring 6 moves synchronously in the axial direction, but its circumferential direction remains freely rotatable.

[0036] The drive mechanism located in the clamping plate 2 starts synchronously, driving the mounting ring 6 to rotate at high speed around the axis of the top rod 4. Under the combined action of the centrifugal force generated by the high-speed rotation and the elastic element 9 between the slide plate 8 and the end face of the storage hole 7, the slide plate 8, which is slidably installed in each storage hole 7, drives the extension rod 10 perpendicular to it to rotate at high speed around the top rod 4.

[0037] Under the action of centrifugal force, the extension rod 10 extends out from the receiving hole 7. The extended extension rod 10 drives the metal brush 12 to grind, deburr and clean the end face of the I-beam tightly pressed against the end of the top rod 4 through the evenly distributed elastic strips 11 on its side wall, so as to provide a clean reference surface for high-precision sawing.

[0038] Once the axial positioning of the I-beam is stable and the end face grinding and slag removal are completed, the cutting machine 101 installed on the base 1 is started to perform high-precision end sawing on the end of the I-beam.

[0039] After sawing is completed, the stepper motor 17 starts in reverse to drive the bidirectional threaded rod 14 to rotate, and uses the reverse thread pair to drive the two clamping plates 2 to move away from each other to loosen the I-beam.

[0040] As the I-beam is removed, the axial compressive force disappears, and the elastic membrane 5 uses its own elastic restoring force to push the top rod 4 forward back to its initial position in the insertion hole; at the same time, the elastic element 9 in the storage hole 7 rebounds, pulling the slide plate 8, extension rod 10 and metal brush 12 to retract as a whole, preparing for work again.

[0041] like Figure 7 As shown, the drive mechanism includes a mounting sleeve 18 that is rotatably sleeved on the outer periphery of the push rod 4, and the mounting sleeve 18 is coaxially fixedly mounted on the side wall of the mounting ring 6. An elastic sleeve 19 is fixedly installed on the side wall of the mounting sleeve 18, and the outer ring side of the elastic sleeve 19 is provided with anti-slip texture. The drive mechanism also includes a drive motor 20, which starts synchronously with the stepper motor 17. A friction wheel 21 is fixedly installed at the output end of the drive motor 20. The friction wheel 21 is in frictional engagement with the anti-slip texture of the elastic sleeve 19. The length-to-diameter ratio of the friction wheel 21 to the housing of the drive motor 20 is 2-3, thereby ensuring that the power output end of the friction wheel 21 can cross the installation gap of the piston 22 and form a stable tangential interference friction contact with the anti-slip texture on the outer side of the elastic sleeve 19.

[0042] The piston 22 is slidably installed in the mounting groove 3. The push rod 4 passes through the piston 22 and is fixedly connected to the piston 22. The drive motor 20 is fixedly installed on the side wall of the piston 22.

[0043] A limit switch 23 is fixedly installed on the clamping plate 2. The contact of the limit switch 23 corresponds to the axial movement trajectory of the push rod 4. The limit switch 23 is configured to be triggered when the push rod 4 is pressed and displaced inward to a set position. The limit switch 23 is electrically connected to the drive motor 20. The limit switch 23 is configured to be triggered when the push rod 4 is pressed and displaced inward to the set position, and to control the drive motor 20 to be de-energized so that the slide plate 8 and the extension rod 10 retract into the storage hole 7 under the elastic restoring force of the elastic element 9. As the I-beam pushes the push rod 4 to move and drives the piston 22 to slide backward in the mounting groove 3, the elastic sleeve 19 always maintains contact with the friction wheel 21. When the drive motor 20 drives the friction wheel 21 to rotate, the friction transmission between the friction wheel 21 and the elastic sleeve 19 overcomes the rotational resistance and drives the mounting sleeve 18 and the mounting ring 6 to rotate at high speed around the outer circumference of the push rod 4.

[0044] By rotating the mounting ring 6, the extension rod 10 and the metal brush 12 are simultaneously rotated around the axis of the top rod 4. Under the action of centrifugal force, the centrifugal force is greater than the elastic force of the elastic element 9. At this time, the extension rod 10 extends out from the storage hole 7, and under the action of the elastic strip 11, the elastic strip 11 naturally extends. At this time, the metal brush 12 on the surface of the elastic strip 11 is tightly pressed against the end face of the I-beam. Thus, the metal brush 12 is used to quickly grind the end face of the I-beam pressed against the end of the top rod 4, thereby using the metal brush 12 to quickly grind and clean the slag on the end face of the I-beam pressed against the end of the top rod 4, ensuring that the cross-section of the I-beam can remain smooth, so that the cross-section of the I-beam can fit against the side wall of the clamping plate 2, thus improving the cutting accuracy.

[0045] As the I-beam continues to advance, pushing the top rod 4 deeper into the mounting groove 3, when the extension rod 10 is about to contact the side wall of the clamping plate 2, the top rod 4 compresses the elastic diaphragm 5 and triggers the limit switch 23 to reach the set threshold. At this time, the limit switch 23 controls the drive motor 20 to de-energize, and the mounting ring 6 and the extension rod 10 stop rotating. Since the rotation stops, the centrifugal force on the slide plate 8 and the extension rod 10 disappears and is less than the elastic restoring force of the elastic element 9. The elastic element 9 returns to its original state and pulls the slide plate 8, causing the extension rod 10 to retract into the receiving hole 7, thereby ensuring that the I-beam can directly and tightly contact the side wall of the clamping plate 2.

[0046] like Figure 3 , Figure 4 As shown, an annular guide groove 24 is provided on the side wall of the hole, and a U-shaped tube 25 is fixedly embedded on the top rod 4; Both ends of the U-shaped tube 25 extend to the surface of the push rod 4 and are respectively distributed on both sides of the piston 22. The end of the U-shaped tube 25 located on the side of the piston 22 closer to the mounting ring 6 is connected to the guide groove 24, and the other end of the U-shaped tube 25 is located on the side of the piston 22 away from the mounting ring 6. During the maximum stroke of the push rod 4 under pressure and sliding, the other end of the U-shaped tube 25 is always kept in the space between the piston 22 and the insertion hole. Each receiving hole 7 has an air hole 26 on its bottom wall that communicates with the guide groove 24; A conduit 27 extending into the extension rod 10 is fixedly inserted into the bottom wall of the slide plate 8. An air pipe 28 extending into the outer wall of the extension rod 10 is obliquely inserted into the side wall of the conduit 27. The exhaust end of the air pipe 28 is oriented toward the processing area of ​​the I-beam end face.

[0047] As the I-beam pushes the top rod 4 to move and drives the piston 22 to slide backward in the mounting groove 3, the air in the mounting groove 3 is compressed by the piston 22, forming a high-pressure airflow.

[0048] First, the compressed high-pressure air flows in from one end of the U-tube 25 located in the closed space formed by the piston 22 and the mounting groove 3, bypasses the piston 22 and flows out from the other side of the U-tube 25, and is directly introduced into the annular guide groove 24 on the side wall of the hole.

[0049] The high-pressure air entering the guide channel 24 is diverted to the guide tube 27 on the bottom wall of the corresponding slide plate 8 through the air hole 26 on the bottom wall of each receiving hole 7, and extends along the guide tube 27 to the inside of the extension rod 10.

[0050] Then, high-pressure air is ejected from the exhaust end of the air pipe 28, which is fixed to the side wall of the extension rod 10. Since the exhaust end of the air pipe 28 is oriented towards the area to be ground on the end face of the I-beam, when the piston 22 compresses the air backward due to the axial advancement of the I-beam, the high-pressure air is ejected instantaneously at the start of the grinding operation, which powerfully blows away the iron filings and impurities generated during grinding, preventing the debris from blocking the grinding mechanism and ensuring the cleanliness of the processed surface.

[0051] When piston 22 is reset, mounting groove 3 draws air from the outside through guide groove 24, U-shaped tube 25, air hole 26, conduit 27 and air pipe 28 to prevent vacuum negative pressure from forming in mounting groove 3 and locking it, thereby ensuring smooth reset of push rod 3.

[0052] like Figure 4 As shown, the slide plate 8 and extension rod 10 retract into the receiving hole 7 under the elastic restoring force of the elastic element 9; the elastic strip 11 is made of a highly flexible memory alloy, and the internal cavity of the receiving hole 7 has sufficient accommodating depth in the radial direction. When the extension rod 10 retracts, the end of the elastic strip 11 with a length-to-diameter ratio of 3-5 is guided and squeezed by the inner wall of the receiving hole 7, undergoes elastic deformation, and bends or curls in a U-shape along the inner circumferential wall of the receiving hole 7 and is received in the cavity. When it is thrown out again by centrifugal force, the elastic strip 11 instantly recovers its stretched and straight state by the internal stress of the memory material, avoiding mechanical jamming interference. Therefore, when the extension rod 10 drives the elastic strip 11 to extend out of the receiving hole 7, the elastic strip 11 can abut against the side wall of the clamping plate 2; the metal brush 12 is installed on the surface of the elastic strip 11 on the side of the extension rod 10 away from the elastic membrane 5.

[0053] Since the elastic strip 11 is located between the extension rod 10 and the side wall of the clamping plate 2 and maintains elastic contact with them, when the mounting ring 6 drives the extension rod 10 to rotate at high speed around the axis of the top rod 4, the elastic strip 11 located in the middle performs circumferential dynamic scraping and wiping on the side wall of the clamping plate 2. This allows for the flexible removal and cleaning of iron filings, dust and other impurities that fall and adhere to the surface of the clamping plate 2 during the operation of the machine. This prevents the flying debris generated during grinding from accumulating and hardening on the surface of the clamping plate 2, and improves the continuous operation stability of the mechanism under harsh and multi-chip conditions.

[0054] like Figure 4 As shown, a limit ring 29 is installed at the inner peripheral wall opening of each receiving hole 7; in the high-speed rotation state, the limit ring 29 abuts against the slide plate 8 to limit the maximum centrifugal stroke of the slide plate 8 and to limit the maximum tensile limit of the elastic element 9.

[0055] like Figure 4 As shown, a first annular groove is formed on the inner circumferential wall of the insertion hole, and an inner sealing ring 30 is embedded in the first annular groove; when the push rod 4 is pushed by the I-beam and undergoes axial displacement, its end squeezes the elastic membrane 5. The elastic membrane 5 is forced to undergo axial tensile deformation, which consumes the linear propulsion kinetic energy of the I-beam and converts the rigid physical impact of the I-beam on the clamping plate 2 into elastic potential energy, thereby preventing the positioning end face of the clamping plate 2 from undergoing plastic deformation due to stress concentration; A second annular groove is provided on the outer peripheral wall of the piston 22, and an outer sealing ring 31 is embedded in the second annular groove; the edge of the elastic diaphragm 5 is sealed and fixedly connected to the side wall of the clamping plate 2. The inner peripheral wall of the insertion hole and the outer peripheral surface of the push rod 4 are dynamically sealed by the inner sealing ring 30; at the same time, the outer peripheral wall of the piston 22 and the inner wall of the mounting groove 3 are dynamically sealed by the outer sealing ring 31. During the process of sawing the I-beams at the end and high-speed grinding and cleaning of the end face by the metal brush 12, a large amount of metal splatter chips and fine iron powder are generated. By using the cooperation between the outer sealing ring 31 and the piston 22, the internal cavity of the mounting groove 3 can be physically isolated from the harsh external working environment. The inner sealing ring 30 blocks the gap between the insertion hole and the push rod 4, preventing high-pressure gas leakage in the pneumatic circuit. This improves the sealing and dustproof performance of the whole machine, avoids the grinding debris from causing jamming or abnormal wear on the piston 22, and extends the continuous operating life of the equipment under dusty conditions.

[0056] like Figure 5As shown, a guide groove is provided axially on the inner peripheral wall of the insertion hole, and the guide rod 32 is adapted to the guide groove. The guide rod 32 adapted to the guide groove is fixedly embedded on the outer peripheral wall of the push rod 4. The guide rod 32 is slidably installed in the guide groove, so that the push rod 4 can only move axially in a straight reciprocating motion along the insertion hole and restrict its circumferential rotation, preventing the push rod 4 from rotating with the mounting ring 6 and rotating on the surface of the elastic diaphragm 5 and the limit switch 23, thus protecting the limit switch 23 and the elastic diaphragm 5.

[0057] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. An I-beam end-cutting device, comprising a base (1) on which a cutting machine (101) is provided. Its features are: Two clamping plates (2) are slidably mounted on the base (1); The two clamping plates (2) are provided with mounting grooves (3) on their adjacent side walls, and each mounting groove (3) is provided with a buffer mechanism and a grinding mechanism. The buffer mechanism includes an insertion hole opened on the side wall of the mounting groove (3), a top rod (4) is horizontally slidably inserted in the insertion hole, an elastic membrane (5) is fixedly installed on the side wall of the clamping plate (2) away from the opening of the mounting groove (3), the elastic membrane (5) covers the insertion hole, and one end of the top rod (4) abuts against the elastic membrane (5), and the other end of the top rod (4) extends out of the mounting groove (3); The grinding mechanism includes a mounting ring (6), which has a hole, and the outer periphery of the top rod (4) has an annular limiting groove. The mounting ring (6) is rotatably fitted into the limiting groove through the hole. The mounting ring (6) has a number of storage holes (7) evenly distributed along the circumferential direction on its side wall. Each storage hole (7) has a sliding plate (8) slidably installed inside it. An elastic element (9) is installed between the sliding plate (8) and the end face of the storage hole (7). An extension rod (10) perpendicular to the top rod (4) is fixedly installed on the surface of the slide plate (8). Elastic strips (11) are evenly installed on the side wall of the extension rod (10). A metal brush (12) is fixedly installed on the surface of the elastic strip (11). Furthermore, the clamping plate (2) is provided with a driving mechanism for driving the mounting ring (6) to rotate around the top rod (4).

2. The I-beam end-cutting equipment according to claim 1, characterized in that: A bracket (13) is fixedly installed on the bottom wall of the base (1), and a bidirectional threaded rod (14) is horizontally rotatably installed on the bracket (13). A through groove (15) parallel to the bidirectional threaded rod (14) is opened on the base (1). The bidirectional threaded rod (14) is threaded with two sliders (16), the tops of the two sliders (16) pass through the through groove (15) and are fixedly connected to the bottom wall of the corresponding clamping plate (2); A stepper motor (17) is fixedly installed on the bottom wall of the base (1), and the output end of the stepper motor (17) is fixedly connected to one end of the bidirectional threaded rod (14).

3. The I-beam end-cutting equipment according to claim 2, characterized in that: The driving mechanism includes a mounting sleeve (18) that is rotatably sleeved on the outer periphery of the top rod (4), and the mounting sleeve (18) is coaxially fixedly installed on the side wall of the mounting ring (6); An elastic sleeve (19) is fixedly installed on the side wall of the mounting sleeve (18), and the outer ring side of the elastic sleeve (19) is provided with anti-slip texture; The drive mechanism also includes a drive motor (20), and a friction wheel (21) is fixedly installed at the output end of the drive motor (20). The friction wheel (21) is in frictional engagement with the anti-slip texture of the elastic sleeve (19).

4. The I-beam end-cutting equipment according to claim 3, characterized in that: The piston (22) is slidably installed in the mounting groove (3), the push rod (4) passes through the piston (22) and is fixedly connected to the piston (22), and the drive motor (20) is fixedly installed on the side wall of the piston (22).

5. The I-beam end-cutting equipment according to claim 1, characterized in that: A limit switch (23) is fixedly installed on the clamp (2). The contact of the limit switch (23) corresponds to the axial movement trajectory of the push rod (4). The limit switch (23) is configured to be triggered when the push rod (4) is pressed and displaced inward to a set position. The limit switch (23) is electrically connected to the drive motor (20). The limit switch (23) is configured to be triggered when the top rod (4) is pressed and displaced inward to a set position, and to control the drive motor (20) to be de-energized so that the slide plate (8) and the extension rod (10) retract into the storage hole (7) under the elastic restoring force of the elastic member (9).

6. The I-beam end-cutting equipment according to claim 5, characterized in that: An annular guide groove (24) is provided on the side wall of the hole, and a U-shaped tube (25) is fixedly embedded on the top rod (4). Both ends of the U-shaped tube (25) extend to the surface of the push rod (4) and are respectively distributed on both sides of the piston (22). The end of the U-shaped tube (25) located on the side of the piston (22) closer to the mounting ring (6) is connected to the guide groove (24), and the other end of the U-shaped tube (25) is located on the side of the piston (22) away from the mounting ring (6). During the maximum stroke of the push rod (4) under pressure, the other end of the U-shaped tube (25) is always kept in the space between the piston (22) and the insertion hole. Each of the receiving holes (7) has an air hole (26) on its bottom wall that communicates with the guide groove (24). A conduit (27) extending into the extension rod (10) is fixedly inserted on the bottom wall of the slide plate (8). An air pipe (28) extending into the outer wall of the extension rod (10) is obliquely inserted on the side wall of the conduit (27). The exhaust end of the air pipe (28) is oriented toward the processing area of ​​the I-beam end face.

7. The I-beam end-cutting equipment according to claim 1, characterized in that: The metal brush (12) is mounted on the surface of the elastic strip (11) on the side of the extension rod (10) away from the elastic membrane (5).

8. The I-beam end-cutting equipment according to claim 1, characterized in that: A limit ring (29) is installed at the opening of the inner peripheral wall of each of the aforementioned receiving holes (7).

9. The I-beam end-cutting equipment according to claim 4, characterized in that: The inner peripheral wall of the insertion hole is provided with a first annular groove, and an inner sealing ring (30) is embedded in the first annular groove. The piston (22) has a second annular groove on its outer peripheral wall, and an outer sealing ring (31) is embedded in the second annular groove; the edge of the elastic membrane (5) is sealed and fixedly connected to the side wall of the clamping plate (2).

10. The I-beam end-cutting equipment according to claim 1, characterized in that: A guide groove is provided on the inner peripheral wall of the insertion hole along the axial direction, and a guide rod (32) adapted to the guide groove is fixedly embedded on the outer peripheral wall of the top rod (4); the guide rod (32) is slidably installed in the guide groove.

Images