Flange groove broaching equipment for expansion joint

Abstract

The present application relates to the technical field of broaching processing, and particularly relates to a flange groove broaching processing equipment for expansion joint, which comprises a turnover mechanism composed of a cylinder, a rack and a gear ring, can drive the mounting base to carry the split-welded flange plate of the expansion joint to complete 180-degree rotation conversion, realizes mechanical hard limiting by the gear ring abutting against the inner wall of the broaching main body, controls the rotation angle accurately, does not need to disassemble the large flange workpiece to re-clamp and correct in the processing process, directly rotates the welding area to the side far from the broaching path, avoids the impact of the cutting load on the weak position of the welding seam, effectively prevents the welding seam from cracking and the material from collapsing and damaging, avoids the processing defects of the annular sealing groove, saves the cumbersome operation of clamping in batches, greatly reduces the time consumption of workpiece clamping and correction, significantly improves the processing efficiency of the split-welded large-size expansion joint flange, and stably guarantees the overall processing and forming precision of the flange annular sealing groove.

Description

Technical Field

[0001] This invention relates to the field of broaching technology, and in particular to a broaching machine for expansion joint flange grooves. Background Technology

[0002] Expansion joint flange groove broaching equipment is used for broaching and forming the annular sealing groove on the end face of expansion joint flanges. It is designed for applications involving large-diameter, thin-walled, easily deformable expansion joint flanges and high-precision annular sealing grooves. Utilizing a broach with linear reciprocating feed, it completes the forming and cutting of the flange sealing groove in a single pass, replacing multiple milling and planing steps. This ensures the groove depth, width, and bottom flatness, and is adaptable to the clamping and positioning of expansion joint flanges of different specifications. However, in the aforementioned scenario of broaching the sealing groove of large, split-type welded expansion joint flanges, existing conventional broaching equipment lacks workpiece-in-situ reversing adjustment functionality, particularly for applications with residual welding stress and weld material continuity issues. For spliced ​​flanges with poor continuity, the equipment can only complete a single broaching operation at a fixed station. It cannot avoid the cutting force in the weld area. In order to ensure the processing quality, it is necessary to rely on manual disassembly and re-clamping of the workpiece multiple times to complete the processing of the entire flange groove in one operation. This processing method not only greatly increases the processing time of workpiece clamping and correction, reducing the overall production efficiency, but also makes it easy for positioning deviations to occur due to repeated manual clamping. At the same time, the cutting load continuously impacts the weak area of ​​the weld, which can easily cause weld cracking, material breakage and defects, resulting in sealing groove forming defects. Ultimately, this leads to the subsequent sealing assembly accuracy of the expansion joint flange not meeting the standards, and the overall workpiece processing yield is low. Summary of the Invention

[0003] The technical problem to be solved: In the scenario of broaching the sealing groove of a large split welded expansion joint flange, the existing conventional broaching equipment lacks the function of adjusting the workpiece in place. For spliced ​​flanges with residual welding stress and poor continuity of weld material, the equipment can only complete a single broaching operation at a fixed position, and cannot avoid the cutting force in the weld area. In order to ensure the processing quality, it is necessary to rely on manual disassembly and re-clamping of the workpiece multiple times to complete the processing of the entire flange groove in multiple times. This processing method not only significantly increases the processing time of workpiece clamping and correction, reducing the overall production efficiency, but also makes it easy for positioning deviations to occur due to repeated manual clamping. At the same time, the cutting load continuously impacts the weak area of ​​the weld, which can easily cause weld cracking, material breakage and defects, resulting in sealing groove forming defects. Ultimately, this leads to the failure of the subsequent sealing assembly accuracy of the expansion joint flange and the low overall workpiece processing yield.

[0004] To address the shortcomings of existing technologies, this invention provides a broaching machine for expansion joint flange grooves, thereby solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An expansion joint flange groove broaching machine includes a broaching body and a support frame. The lower end of the broaching body is fixedly connected to the support frame, and the rear end of the broaching body is rotatably connected to a mounting base. The mounting base holds an expansion joint flange. The rear end of the mounting base is provided with a flipping mechanism, which includes a gear ring and a rack. The gear ring is located inside the broaching body, and the rear end face of the gear ring is fixedly connected to the front end face of the mounting base. The rack is located at the upper end of the gear ring and meshes with the gear ring. A fixed long plate is fixedly installed on the upper surface of the rack. A cylinder is fixedly mounted on the side of the broaching body, and the output end of the cylinder penetrates the broaching body and is fixedly connected to the fixed long plate.

[0007] The upper surface of the broaching body is also equipped with a cleaning mechanism, which includes a fixed frame, cylinder two, cover plate, air jet mechanism and rectangular plate. The lower surface of the cover plate has a rectangular groove. The upper surface of the broaching body is fixedly connected to the fixed frame, the upper surface of the fixed frame is fixedly connected to the cover plate, the rectangular plate is movably fitted inside the fixed frame, and the right end of the fixed frame is fixedly connected to the air jet mechanism.

[0008] In one possible implementation, cylinder two is fixedly connected to the side surface of the fixed frame, the output port of cylinder two passes through the fixed frame and is fixedly connected to the left surface of the rectangular plate, and a nozzle is provided at the end of the jet mechanism, with the nozzle aligned with the expansion joint flange.

[0009] In one possible implementation, a rubber ring is fixedly connected to the side surface of the rectangular plate, and the rubber ring is tightly fitted to the inner wall of the fixed frame.

[0010] In one possible implementation, the upper end of the cover plate has an air hole, and the inside of the cover plate is provided with a movable frame corresponding to the air hole. A sealing slider is movably sleeved inside the movable frame, and two springs are fixedly connected to the side of the sealing slider facing the movable frame.

[0011] In one possible implementation, a sloping block is fixedly connected to the side of the sealing slider away from the spring four, and limit blocks two are fixedly connected to both ends of the sealing slider. Two limit grooves two corresponding to the positions of the limit blocks two are opened on the inner wall of the moving frame. Both limit blocks two are slidably connected to the moving frame through the limit grooves two. Fixed plates are provided at both ends of the moving frame, and both fixed plates are fixedly connected to the inner wall of the cover plate.

[0012] In one possible implementation, a connecting column is fixedly connected to the left surface of the movable frame, and a disk is provided at the left end of the fixed plate located on the left side. The end of the connecting column passes through the fixed plate and is fixedly connected to the disk. A second spring is fixedly connected to the side of the disk facing the fixed plate, and the other end of the second spring is fixedly connected to the corresponding fixed plate. A magnetic suction plate is fixedly connected to the right surface of the fixed plate located on the left end, and a stop plate is fixedly connected to the right surface of the magnetic suction plate.

[0013] In one possible implementation, a movable long plate is provided at the left end of the disk, and a plastic plate is fixedly connected to the end of the lower surface of the movable long plate. The plastic plate is made of polyurethane wear-resistant plastic material.

[0014] In one possible implementation, a connecting post is fitted on the side surface of the plastic plate, and the two ends of the connecting post are fixedly connected to the inner wall of the cover plate. Limiting blocks are fixedly connected to both ends of the movable long plate. A limiting groove corresponding to the limiting block is opened on the inner wall of the cover plate. Both limiting blocks are slidably connected to the cover plate through the limiting groove.

[0015] In one possible implementation, a spring is fixedly connected to the upper surface of the movable long plate, and the upper surface of the spring is fixedly connected to the cover plate.

[0016] In one possible implementation, a T-shaped groove is provided on the upper surface of the fixed long plate, and a T-shaped long block corresponding to the T-shaped groove is fixedly connected to the lower surface of the fixed frame. The T-shaped long block is slidably connected to the fixed long plate through the T-shaped groove.

[0017] Beneficial effects compared to existing technologies:

[0018] 1. In this solution, a flipping mechanism consisting of a cylinder, rack, and gear ring is set up to drive the mounting base to carry the split welded expansion joint flange to complete a 180° rotation change in place. The gear ring is pressed against the inner wall of the broaching body to achieve mechanical hard limit, and the rotation angle is precisely controlled. During the processing, there is no need to disassemble the large flange workpiece for re-clamping and correction. The weld area is directly rotated to the side away from the broach cutting path, avoiding the impact of cutting load on the weak part of the weld, effectively preventing weld cracking and material breakage, avoiding processing defects in the annular sealing groove, saving the tedious operation of clamping in multiple stages, greatly reducing the time spent on workpiece clamping and correction, significantly improving the processing efficiency of the split welded large-size expansion joint flange, and at the same time, ensuring the overall processing accuracy of the flange annular sealing groove.

[0019] 2. In this solution, the cleaning mechanism uses a cylinder to drive a rectangular plate to slide back and forth inside the fixed frame. The rubber ring helps to seal the cavity. After the air in the sliding compressed cavity is compressed, the airflow is ejected at high speed by the nozzle of the jet mechanism. After the flipping mechanism completes the flange reversal, the broaching chips on the workpiece surface and the station are blown away in time. This can prevent the chips raised by the flipping action from remaining on the flange sealing groove machining surface, and prevent the chips from crushing and scratching the sealing groove forming surface during subsequent secondary broaching. At the same time, it prevents the chips from entering the transmission meshing gap between the gear ring and the rack, reducing the problems of jamming and abnormal wear of transmission components. There is no need for manual cleaning of the station, reducing the workload of manual operation. This protects the surface quality of the workpiece and maintains the long-term stable operation of the flipping transmission mechanism.

[0020] 3. In this solution, the cover plate is equipped with an automatic air intake and pressure relief structure consisting of air holes, a moving frame, a sealing slider, a spring, and a magnetic suction plate. When the rectangular plate is retracted and negative pressure is easily formed inside the cavity, the air holes are automatically opened to introduce outside air into the cavity, which counteracts the negative pressure and suppresses the reverse suction effect of the nozzle of the jet mechanism. This prevents chips and debris from being sucked back into the nozzle and causing blockage. The entire structure is triggered by the rubber ring squeezing the inclined block. The processing mechanism can complete the opening and closing control by its own reciprocating motion. No additional drive components are required. After processing, the magnetic lock can be automatically released to complete the reset and sealing of the air holes. This solves the hidden danger of negative pressure back suction without adding complex drive, ensures the long-term stable operation of the jet cleaning mechanism, and reduces the probability of nozzle blockage failure.

[0021] 4. In this solution, the equipment is equipped with sliding guides and limiting structures in multiple places. Limiting block one and limiting groove one, and limiting block two and limiting groove two, respectively constrain the movement trajectory of the moving long plate and the sealing slider. T-shaped long blocks and T-shaped sliding grooves guide the fixed frame to prevent it from detaching. Spring one assists the moving long plate to return to its original position automatically. Each guide and limiting pair restricts the components from deviating and detaching, ensuring that each component slides smoothly along the preset path. At the same time, the stroke constraint avoids the movement interference between the rectangular plate, the rubber ring and the abutment plate, and avoids the components from colliding and being damaged. The T-shaped mating structure also has the ability to prevent detachment and limit, preventing the components from detaching and failing. The entire limiting and guiding system is realized by the mechanical structure of the equipment itself, which improves the reliability of the entire mechanism's cyclic reciprocating action and reduces the probability of jamming and component damage.

[0022] 5. In this solution, the flipping mechanism, compressed air cleaning mechanism, negative pressure relief structure, and multiple sets of guide and limit mechanisms work together to form a complete processing protection system. The flipping mechanism enables the workpiece to change direction in place to avoid weld defects, but the rotation of the workpiece will disturb the chips and scatter them. The cleaning mechanism follows the flipping action to complete the blowing and chip removal, solving the secondary problem of chip diffusion caused by the flipping. The negative pressure relief structure ensures the air jet capability of the cleaning mechanism and prevents the nozzle from sucking back and clogging chips. Various guide and limit structures simultaneously protect all moving parts of the flipping mechanism and the cleaning mechanism, avoiding motion interference and component jamming and dislodging. Each mechanism does not work independently. The incidental problems caused by the previous mechanism are resolved by the subsequent mechanism. The whole system not only solves the problem of weld chipping of split flanges, but also controls the hazards of chips, and ensures the stable and reliable operation of the entire equipment cycle. The comprehensive processing efficiency is far higher than that of using the mechanism alone. Attached Figure Description

[0023] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the broaching main structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the cylinder structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the gear ring structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the fixed frame of the present invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A;

[0030] Figure 7 This is a schematic diagram of the movable long plate structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the disk structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the inclined block structure of the present invention.

[0033] Legend: 11. Broaching body; 12. Support frame; 13. Mounting base; 14. Expansion joint flange; 15. Fixing frame; 16. Cylinder 1; 17. Cylinder 2; 18. Cover plate; 19. Rack; 20. Fixed long plate; 21. Air jet mechanism; 22. Air hole; 23. Gear ring; 24. T-shaped long block; 25. T-shaped slide; 26. Rectangular plate; 27. Rubber ring; 28. Moving long plate; 29. ​​Spring 1; 30. Disc; 31. Magnetic suction plate; 32. Moving frame; 33. Fixing plate; 34. Inclined block; 35. Connecting column; 36. Limiting block 1; 37. Limiting groove 1; 38. Rectangular groove; 39. Spring 2; 40. Support plate; 41. Connecting long column; 42. Limiting groove 2; 43. Spring 4; 44. Sealing slider; 45. Limiting block 2; 46. Plastic plate. Detailed Implementation

[0034] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can also be implemented in various different forms, and therefore the present invention is not limited to the embodiments described below. In addition, for the purpose of more clearly describing the present invention, parts not connected to the invention will be omitted from the drawings.

[0035] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0036] Example:

[0037] Please refer to Figure 1and Figure 9 As shown in the figure, this embodiment introduces a broaching machine for expansion joint flange grooves. This machine is specifically designed for broaching and forming the annular sealing groove on the end face of expansion joint flanges. Addressing the challenges of large-diameter, thin-walled, easily deformable expansion joint flanges and the high precision requirements of the annular sealing groove, it utilizes a broach to perform linear reciprocating feed, completing the forming and cutting of the flange sealing groove in one pass. This replaces multiple cutting operations such as milling and planing, ensuring the groove depth, width, and bottom flatness. It is adaptable to the clamping and positioning of flanges of different specifications. The machine includes a broaching body 11 and a support frame 12. The lower end of the broaching body 11 is fixedly connected to the support frame 12, and the rear end of the broaching body 11 is rotatably connected to a mounting base 13. The mounting base 13 holds the expansion joint flange 14, which is directly placed on the mounting base 13 for positioning. The mounting base 13 supports and supports the expansion joint flange 14, thus achieving the installation and positioning of the expansion joint flange 14.

[0038] Some large expansion joint flanges are split-joint welded structures, formed by butt welding two flange components. The overall flange dimensions are large, and residual welding stress remains at the weld seam. When directly broaching the sealing groove of this type of spliced ​​flange, the cutting load generated by the broaching tool acts directly on the weld area. This area has poor material continuity and is highly susceptible to cracking, material breakage, and defects under cutting impact, leading to machining defects in the sealing groove and severely affecting the subsequent sealing performance of the expansion joint flange. Therefore, machining such flanges requires two broaching operations, with manual adjustment of the machining position to complete the cutting. The overall process is cumbersome, time-consuming, and inefficient. Therefore, a flipping mechanism is provided at the rear end of the mounting base 13. The flipping mechanism includes a gear ring 23 and a rack 19. The gear ring 23 is assembled inside the broaching body 11. The rear end face of the gear ring 23 is fixedly connected to the front end face of the mounting base 13. The rack 19 is arranged on the upper end of the gear ring 23 and meshes with it for transmission. A fixed long plate 20 is fixedly installed on the upper surface of the rack 19. A cylinder 16 is fixedly assembled on the side of the broaching body 11. The output end of the cylinder 16 passes through the broaching body 11 and is fixedly connected to the fixed long plate 20. During processing, the expansion joint flange 14, which is formed by separate welding, is placed on the mounting base 13. After the workpiece is clamped, the first broaching operation is performed. The broaching body 11 drives the broach to complete the cutting and then retracts, and the broach is taken out from the processing area. At this point, the operator activates cylinder 16, which drives the fixed plate 20 and rack 19 to move linearly. The rack 19 meshes with and drives the gear ring 23 to rotate until the gear ring 23 moves and abuts against the inner wall of the broaching body 11, achieving mechanical limitation. At this time, the mounting base 13 drives the expansion joint flange 14 to rotate exactly half a turn, and the weld position of the flange rotates to the side away from the broach cutting path, avoiding the cutting force area. After the limitation is in place, the broaching body 11 can be restarted to carry out the broaching of the remaining parts without removing the expansion joint flange 14 for re-clamping and positioning. The flipping mechanism composed of ring 23 drives the mounting base 13 and expansion joint flange 14 to rotate and adjust in place. The mechanical hard limit is achieved by the gear ring 23 abutting against the inner wall of the broaching body 11, which accurately realizes the workpiece half-circle reversal. There is no need to disassemble the workpiece for secondary clamping. The weld position can actively avoid the broaching cutting area, avoid the impact of broaching load on the weld and cause weld collapse and cracking, and eliminate the machining defects of the sealing groove. It saves the tedious steps of two separate clamping and processing, reduces the time spent on workpiece clamping and correction, improves the broaching processing efficiency of the split welded large expansion joint flange, and at the same time ensures the overall machining accuracy of the flange annular sealing groove.

[0039] Cylinder 16 drives the fixed long plate 20. The working stroke of the fixed long plate 20 within the broaching body 11, moving from the leftmost to the rightmost end, is matched and set. This stroke corresponds to the expansion joint flange 14 rotating 180°, which drives the rack 19 to rotate the gear ring 23. The gear ring 23 is limited against the inner wall of the broaching body 11, and a circular hole is opened in the center of the ring gear ring 23 for the broach to pass through. The workpiece can be reversed in place without disassembling the flange, the weld avoids the cutting area, prevents weld failure, reduces clamping time, and improves processing efficiency and the machining accuracy of the sealing groove.

[0040] The upper surface of the broaching body 11 is also provided with a cleaning mechanism, which includes a fixed frame 15, a second cylinder 17, a cover plate 18, an air jet mechanism 21, and a rectangular plate 26. A rectangular groove 38 is formed on the lower surface of the cover plate 18. The upper surface of the broaching body 11 is fixedly connected to the fixed frame 15, and the upper surface of the fixed frame 15 is fixedly connected to the cover plate 18. The rectangular plate 26 is movably fitted inside the fixed frame 15. The right end of the fixed frame 15 is fixedly connected to the air jet mechanism 21. The side surface of the fixed frame 15 is fixedly connected to the second cylinder 17, and the output port of the second cylinder 17 passes through the fixed frame 15 and... The left surface of the rectangular plate 26 is fixedly connected. A nozzle is installed at the end of the jet mechanism 21, aligned with the expansion joint flange 14. The cleaning mechanism starts operation after the flipping mechanism completes the 180° reversal of the expansion joint flange 14. Cylinder 27 drives the rectangular plate 26 to slide inside the fixed frame 15. During the sliding process, the rectangular plate 26 changes the internal cavity volume of the fixed frame 15, compressing the air inside the cavity. The compressed air is ejected at high speed from the nozzle via the jet mechanism 21, blowing away the broaching chips remaining on the workpiece surface and at the workstation after the expansion joint flange 14 has been flipped and repositioned. This prevents residual chips from scratching the flange sealing groove machining surface and also prevents chips from falling into the transmission clearance of the gear ring 23 and rack 19, causing jamming and wear. It eliminates the need for manual cleaning of the workstation, reduces workload, ensures smooth operation of the flipping mechanism, and guarantees the surface quality of the flange workpiece.

[0041] The flipping mechanism completes a half-turn reversal of the expansion joint flange 14, allowing the weld to avoid the cutting area. However, the flange rotation disturbance causes existing chips to scatter and fly, easily falling into the meshing pair and the workpiece machining surface. Immediately after the flipping is completed, a purging and cleaning process is performed to promptly handle the chips raised by the flipping motion. This not only avoids weld damage but also simultaneously eliminates secondary problems caused by chip diffusion from the flipping, preventing chips from damaging the sealing groove, jamming the gear ring 23 and rack 19 during secondary broaching. By avoiding weld defects and controlling chip hazards, this mechanism provides dual protection for workpiece accuracy and mechanism reliability, resulting in overall machining efficiency higher than using either mechanism alone.

[0042] A rubber ring 27 is fixedly connected to the side surface of the rectangular plate 26. The rubber ring 27 moves synchronously with the rectangular plate 26. The rubber ring 27 fits tightly against the inner wall of the fixed frame 15, which improves the sealing performance of the cavity, ensures that the rectangular plate 26 can effectively compress the air in the cavity when it slides, ensures the jet pressure of the jet mechanism 21, reduces air leakage, avoids abnormal negative pressure due to sealing failure, and reduces the risk of backflow of debris.

[0043] The upper end of the cover plate 18 is provided with an air hole 22, and a movable frame 32 is provided inside the cover plate 18. The movable frame 32 corresponds to the air hole 22. In the initial state, the movable frame 32 blocks the air hole 22. When the rectangular plate 26 moves to the right end of the fixed frame 15 and performs a reset and retraction action, a negative pressure will be formed inside the right end cavity of the fixed frame 15, which will drive the jet mechanism 21 to produce a reverse air intake effect, thus posing a risk that some debris will be sucked into the nozzle. Therefore, the movable frame 32 is internally movably connected. A sealing slider 44 is provided. Two springs 43 are fixedly connected to the side of the sealing slider 44 facing the moving frame 32. An inclined block 34 is fixedly connected to the side of the sealing slider 44 away from the springs 43. Limiting blocks 45 are fixedly connected to both ends of the sealing slider 44. Two limiting grooves 42 corresponding to the positions of the limiting blocks 45 are opened on the inner wall of the moving frame 32. The two limiting blocks 45 are slidably connected to the moving frame 32 through the limiting grooves 42. Fixing plates 33 are provided at both ends of the moving frame 32. The two fixing plates 33 are fixedly connected to the inner wall of the cover plate 18. A connecting column 41 is fixedly connected to the left surface of the moving frame 32. A disc 30 is provided at the left end of the fixing plate 33 on the left side. The end of the connecting column 41 passes through the fixing plate 33 and is fixedly connected to the disc 30. A spring 39 is fixedly connected to the side of the disc 30 facing the fixing plate 33. The other end of the spring 39 is fixedly connected to the corresponding fixing plate 33. The right surface of the fixing plate 33 on the left end is fixedly connected to... A magnetic suction plate 31 is provided, and a stop plate 40 is fixedly connected to the right surface of the magnetic suction plate 31. When the rectangular plate 26 drives the rubber ring 27 to push compressed air to the right to complete the air jet chip removal operation at the workstation, the rubber ring 27 first contacts the inclined block 34. The inclined block guides and squeezes the inclined block 34, which drives the sealing slider 44 to compress the spring 43 and retract into the moving frame 32. After the rubber ring 27 completely slides away from the inclined block 34, the spring 43 elastically rebounds, pushing the sealing slider 44 and the inclined block 34 to reset and extend. When the rectangular plate 26 and the rubber ring 27 are pushed to the right and begin to reset and return to the left, the rubber ring 27 abuts against the inclined block 34 again. At this time, the inclined block 34 cannot retract inward, and thus the sealing slider 44 drives the moving frame 32 to slide to the left as a whole, releasing the blockage of the air hole 22 by the moving frame 32. Outside air can be replenished into the cavity of the fixed frame 15 through the air hole 22, thus offsetting the negative pressure generated during the return stroke in advance. As the moving frame 32 continues to move to the left, the inclined block 34 contacts the abutment plate 40 and is compressed and stored, causing the moving frame 32 to adhere to the magnetic suction plate 31. This magnetic attraction achieves self-locking, keeping the air vent 22 continuously open for air intake. The cavity replenishes air through the air vent 22 to balance the negative pressure, effectively reducing the reverse air intake phenomenon of the nozzle of the jet mechanism 21.

[0044] A movable long plate 28 is provided at the left end of the disc 30. A plastic plate 46 is fixedly connected to the lower end of the movable long plate 28. The plastic plate 46 is made of polyurethane wear-resistant plastic material. A connecting post 35 is sleeved on the side surface of the plastic plate 46. The two ends of the connecting post 35 are fixedly connected to the inner wall of the cover plate 18. Limiting blocks 36 are fixedly connected to both ends of the movable long plate 28. A limiting groove 37 corresponding to the limiting block 36 is opened on the inner wall of the cover plate 18. Both limiting blocks 36 are slidably connected to the cover plate 18 through the limiting groove 37. When the rectangular plate 26 and the rubber ring 27 slide past the plastic plate 46 during the reset movement from right to left, the polyurethane plastic plate 46 is squeezed and deformed and flipped, thereby driving the movable long plate 28 to slide to the right. At this point, the movable frame 32 is initially magnetically locked to the magnetic plate 31, and the left side of the disc 30 is attached to the movable long plate 28. The rightward movement of the movable long plate 28 pushes against the disc 30, causing the disc 30 to pull the movable frame 32 synchronously through the connecting long column 41, thus releasing the magnetic fixation between the movable frame 32 and the magnetic plate 31. After the magnetic constraint is released, the second spring 39 releases its elastic thrust, causing the movable frame 32 to quickly return to its original position and slide, resealing the air hole 22. This completes the automatic reset of the entire air intake and depressurization structure, preparing for the next compression jet operation.

[0045] Limiting block 36 and limiting groove 37, and limiting block 45 and limiting groove 42 respectively constitute two sets of sliding guide pairs, which can provide guiding constraints for the sliding movement of the moving long plate 28 and the sealing slider 44, limit the movement stroke of the components, prevent the components from deviating, jamming and dislodging, and ensure that each component moves smoothly along the predetermined trajectory. At the same time, each limiter cooperates to limit the movement trajectory, so that the rectangular plate 26 and the rubber ring 27 will not come into contact with the abutment plate 40 during the entire reciprocating movement, effectively avoiding movement interference between the two, ensuring the reliable operation of the entire compressed air mechanism, and avoiding damage to the components from collision.

[0046] A spring 29 is fixedly connected to the upper surface of the movable long plate 28. The upper surface of the spring 29 is fixedly connected to the cover plate 18. The spring 29 can apply an elastic restoring force to the movable long plate 28. After the rectangular plate 26 and the rubber ring 27 are separated from the plastic plate 46, the spring 29 releases its elastic force and drives the movable long plate 28 to automatically return to the initial position, preparing for the next round of extrusion triggering action. This avoids the movable long plate 28 from staying at the working stroke position and causing motion interference, thus ensuring the stability of the mechanism's cyclic action.

[0047] The upper surface of the fixed long plate 20 is provided with a T-shaped slide groove 25, and the lower surface of the fixed frame 15 is fixedly connected with a T-shaped long block 24 corresponding to the T-shaped slide groove 25. The T-shaped long block 24 is slidably connected to the fixed long plate 20 through the T-shaped slide groove 25. The T-shaped long block 24 and the T-shaped slide groove 25 cooperate with each other to provide sliding guide constraint for the fixed frame 15, limit the movement trajectory of the fixed frame 15, prevent the fixed frame 15 from deviating or lifting off, and improve the stability of the sliding process. The T-shaped structure can also play a role in preventing disengagement and limiting, preventing the T-shaped long block 24 from coming out of the T-shaped slide groove 25, and ensuring the reliability of the assembly and movement of the fixed frame 15.

[0048] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A broaching machine for expansion joint flange grooves, comprising a broaching body (11) and a support frame (12), wherein the lower end of the broaching body (11) is fixedly connected to the support frame (12), and a mounting base (13) is rotatably connected to the rear end of the broaching body (11), and an expansion joint flange (14) is placed on the mounting base (13), characterized in that, The rear end of the mounting base (13) is provided with a flipping mechanism, which includes a gear ring (23) and a rack (19). The gear ring (23) is located inside the broaching body (11). The rear end face of the gear ring (23) is fixedly connected to the front end face of the mounting base (13). The rack (19) is located at the upper end of the gear ring (23) and meshes with the gear ring (23). A fixed long plate (20) is fixedly installed on the upper surface of the rack (19). A cylinder (16) is fixedly mounted on the side of the broaching body (11). The output end of the cylinder (16) passes through the broaching body (11) and is fixedly connected to the fixed long plate (20). The upper surface of the broaching body (11) is also provided with a cleaning mechanism, which includes a fixed frame (15), a second cylinder (17), a cover plate (18), an air jet mechanism (21), and a rectangular plate (26). A rectangular groove (38) is provided on the lower surface of the cover plate (18). The upper surface of the broaching body (11) is fixedly connected to the fixed frame (15). The upper surface of the fixed frame (15) is fixedly connected to the cover plate (18). The rectangular plate (26) is movably sleeved inside the fixed frame (15). The right end of the fixed frame (15) is fixedly connected to the air jet mechanism (21).

2. The expansion joint flange groove broaching processing equipment as described in claim 1, characterized in that, The side surface of the fixed frame (15) is fixedly connected to the cylinder two (17). The output port of the cylinder two (17) passes through the fixed frame (15) and is fixedly connected to the left surface of the rectangular plate (26). The end of the jet mechanism (21) is provided with a nozzle, which is aligned with the expansion joint flange (14).

3. The expansion joint flange groove broaching processing equipment as described in claim 1, characterized in that, A rubber ring (27) is fixedly connected to the side surface of the rectangular plate (26), and the rubber ring (27) is tightly fitted to the inner wall of the fixed frame (15).

4. The expansion joint flange groove broaching processing equipment as described in claim 1, characterized in that, The upper end of the cover plate (18) is provided with an air hole (22), and the inside of the cover plate (18) is provided with a movable frame (32). The movable frame (32) corresponds to the air hole (22). A sealing slider (44) is movably sleeved inside the movable frame (32). Two springs (43) are fixedly connected to the side of the sealing slider (44) facing the movable frame (32).

5. The expansion joint flange groove broaching processing equipment as described in claim 4, characterized in that, The sealing slider (44) is fixedly connected to the inclined block (34) on the side away from the spring four (43). Both ends of the sealing slider (44) are fixedly connected to the limit block two (45). The inner wall of the moving frame (32) has two limit grooves two (42) corresponding to the positions of the limit block two (45). Both limit blocks two (45) are slidably connected to the moving frame (32) through the limit grooves two (42). Both ends of the moving frame (32) are provided with fixing plates (33). Both fixing plates (33) are fixedly connected to the inner wall of the cover plate (18).

6. The expansion joint flange groove broaching equipment as described in claim 5, characterized in that, A connecting column (41) is fixedly connected to the left surface of the movable frame (32). A disc (30) is provided at the left end of the fixed plate (33) on the left side. The end of the connecting column (41) passes through the fixed plate (33) and is fixedly connected to the disc (30). A spring (39) is fixedly connected to the side of the disc (30) facing the fixed plate (33). The other end of the spring (39) is fixedly connected to the corresponding fixed plate (33). A magnetic plate (31) is fixedly connected to the right surface of the fixed plate (33) on the left end, and a stop plate (40) is fixedly connected to the right surface of the magnetic plate (31).

7. The expansion joint flange groove broaching equipment as described in claim 6, characterized in that, The left end of the disc (30) is provided with a movable long plate (28), and the lower end of the movable long plate (28) is fixedly connected with a plastic plate (46), which is made of polyurethane wear-resistant plastic material.

8. The expansion joint flange groove broaching processing equipment as described in claim 7, characterized in that, The side surface of the plastic plate (46) is fitted with a connecting post (35). The two ends of the connecting post (35) are fixedly connected to the inner wall of the cover plate (18). The two ends of the movable long plate (28) are fixedly connected with limit blocks (36). The inner wall of the cover plate (18) is provided with a limit groove (37) corresponding to the limit block (36). The two limit blocks (36) are slidably connected to the cover plate (18) through the limit groove (37).

9. The expansion joint flange groove broaching equipment as described in claim 8, characterized in that, A spring (29) is fixedly connected to the upper surface of the movable long plate (28), and the upper surface of the spring (29) is fixedly connected to the cover plate (18).

10. The expansion joint flange groove broaching equipment as described in claim 1, characterized in that, The upper surface of the fixed long plate (20) is provided with a T-shaped groove (25), and the lower surface of the fixed frame (15) is fixedly connected with a T-shaped long block (24) corresponding to the T-shaped groove (25). The T-shaped long block (24) is slidably connected to the fixed long plate (20) through the T-shaped groove (25).

Images