A sawing mechanism for processing metal fasteners

Abstract

This invention relates to the field of metal cutting and processing technology, specifically to a sawing mechanism for processing metal fasteners. It includes a sawing machine, a control unit, a feeding unit, and a straightening unit mounted on the sawing machine. It also includes a sawing unit, a hopper, and a drive unit mounted on the sawing machine. A protective cover is installed on the sawing machine in conjunction with the sawing unit, and a pressure unit is also installed on the sawing machine to drive the sawing unit to move vertically for sawing operations. The advantages are: this invention uses elastic damping clamping to initially buffer and suppress saw blade vibration, and utilizes the inertial force of the counterweight ball in the anti-resonance structure to actively cancel vibration energy; simultaneously, the vibration kinetic energy is converted into high-pressure gas and stored via a cylinder, automatically increasing the downward pressure of the counterweight ball as vibration intensifies to enhance anti-resonance strength. These three elements work synergistically to achieve a progressive vibration suppression of buffering, cancellation, and self-reinforcement, significantly improving sawing stability and energy utilization.

Description

Technical Field

[0001] This invention relates to the field of metal cutting and processing technology, specifically to a sawing mechanism for processing metal fasteners. Background Technology

[0002] With the rapid development of the fastener manufacturing industry, the requirements for fastener processing accuracy and surface quality are increasing. As an important process for cutting and forming metal fastener blanks, sawing directly affects the forming accuracy of subsequent cold heading, wire rolling and other processes.

[0003] Currently, the most commonly used sawing equipment is the sawing machine, which cuts through the high-speed rotation of the saw blade. The saw blade clamping plates of existing sawing machines are mostly fixed-spacing structures, which cannot detect the distance between the two sets of clamping plates in real time. This results in poor adaptability when clamping workpieces of different specifications, and problems such as slippage due to excessively loose clamping and damage to the workpiece due to excessively tight clamping are prone to occur, affecting the stability of sawing processing. In addition, the clamping structure is prone to wear and deformation after long-term use, and sawing vibration can also cause changes in the clamping gap. The lack of clamping compensation function leads to unstable workpiece clamping tightness, which is prone to displacement, reducing the cutting accuracy and the yield of finished products.

[0004] Therefore, CN121892760A discloses an automatic cutting device for aluminum alloy die-casting parts, which has a concave saw body. The saw body is equipped with a saw blade at the drive end, and also has an energy absorption mechanism and a cleaning mechanism. The energy absorption mechanism includes a support plate fixedly installed on the lower horizontal section of the saw body. A worktable is fixedly installed on the upper end of the support plate through multiple pillars. A pair of fixed seats are detachably installed on the support plate. The fixed seats have a Z-shaped structure. A pair of levers are rotatably installed on the fixed seats through a shaft column. A roller that lightly contacts the saw blade is rotatably installed on the upper end of each pair of levers. A rotating shaft is also rotatably installed on the fixed seats through a shaft seat. A pendulum is movably installed on the rotating shaft. A gear set is provided between the levers and the pendulum. The gear set and the pendulum are magnetically engaged. When the saw blade vibrates, the lever swings, and the gear set drives the pendulum to magnetically attract or repel, driving the pendulum to slide and swing along the rotating shaft to absorb vibration energy.

[0005] The aforementioned saw, through the coordinated operation of the energy absorption mechanism and the cleaning mechanism, absorbs and dissipates impact energy in real time when the saw blade encounters hard points, effectively suppressing saw blade vibration. At the same time, it continuously removes the built-up edge adhering to the surface of the saw blade, keeping chip removal smooth, thereby significantly improving cutting quality and extending the service life of the saw blade, solving the problems of saw blade vibration and chip removal difficulties in the prior art.

[0006] However, in actual use, the aforementioned sawing machine uses rollers that lightly contact the two sides of the saw blade. When the saw blade vibrates, it pushes the lever to swing. Through the magnetic cooperation of the gear set and the pendulum, the kinetic energy of the saw blade vibration is converted into the kinetic energy of the pendulum swing and dissipated. This achieves real-time capture and absorption of impact energy, avoids the transmission of vibration to the sawing area, ensures a flat cut surface without vibration marks, and extends the service life of the saw blade. Although this method can suppress vibration to a certain extent, the suppression effect is poor, and the energy generated by the vibration is converted into the kinetic energy of the pendulum, resulting in low energy utilization.

[0007] Therefore, a new type of sawing mechanism for metal fastener processing can be adopted to overcome the shortcomings of the existing technology. Summary of the Invention

[0008] The purpose of this invention is to provide a sawing mechanism for processing metal fasteners, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a sawing mechanism for processing metal fasteners, including a sawing machine, a control unit, a feeding unit and a straightening unit installed on the sawing machine, and further including a sawing unit, a hopper and a drive unit installed on the sawing machine;

[0010] The saw is equipped with a protective cover that works in conjunction with the sawing unit, and a pressing unit that works in conjunction with the sawing unit is also installed on the saw to drive the sawing unit to move vertically for sawing operations.

[0011] The sawing unit includes a driven wheel and a drive wheel. The drive unit is used to drive the drive wheel to rotate. A saw blade is sleeved between the driven wheel and the drive wheel. A positioning component that cooperates with the saw blade is installed on the sawing machine.

[0012] The positioning assembly includes a truss, a first positioning clamp slidably mounted on the truss, and a second positioning clamp. The bottom of the first positioning clamp is equipped with a first limiting module that cooperates with the saw blade, and the bottom of the second positioning clamp is equipped with a second limiting module that cooperates with the saw blade and a vibration suppression module.

[0013] A hydraulic rod is fixedly installed on the sawing machine. The driving end of the hydraulic rod is rotatably connected to the driven wheel and is used to adjust the tension of the saw blade.

[0014] An electric actuator is fixedly installed on the sawing machine. The electric actuator is fixedly connected to the truss and is used to adjust the position of the positioning component.

[0015] Both the first limiting module and the second limiting module include a fixed block and two limiting wheels. The fixed block is fixedly connected to the corresponding first positioning clamp and second positioning clamp. The two limiting wheels are rotatably mounted on the corresponding fixed blocks. The distance between the two limiting wheels on the same fixed block is the same as the thickness of the saw blade. Each limiting wheel is fitted with a rubber ring on its outer ring.

[0016] The vibration suppression module includes two mounting brackets fixedly mounted on the second positioning clamp via a support frame. A linkage assembly is installed between the two mounting brackets, and a bolt adjustment structure for adjusting the linkage assembly is installed between the two mounting brackets. Two clamping plates are installed at the bottom of the linkage assembly. A wheel frame is installed on each of the two clamping plates via an elastic damping structure. A pressure roller that abuts against the saw blade is rotatably mounted on each of the two wheel frames.

[0017] The elastic damping structure includes multiple sliding columns slidably mounted on the clamping plate. Each sliding column is fixedly installed with a damping sleeve between it and the clamping plate. A connecting plate is fixedly installed between the multiple sliding columns that cooperate with each other. Two tension springs are fixedly installed between each of the two connecting plates and the clamping plate. An energy storage component that cooperates with the connecting plates on the two clamping plates is installed on the mounting frame.

[0018] The energy storage component includes a gas storage tank fixedly installed on a mounting frame. Two gas injection cylinders are fixedly connected to the gas storage tank. An automatic reset piston is slidably installed in each of the two gas injection cylinders, and a one-way pipe is connected to each of the two gas injection cylinders. A shaft is installed on two sets of connecting plates through a sliding component. A swing arm is rotatably installed on each of the two clamping plates. The two swing arms are rotatably connected to their corresponding shafts. A second steel wire rope is fixedly installed between the ends of the two swing arms and their corresponding automatic reset pistons. An anti-resonance component is installed between the two swing arms.

[0019] The sliding component includes sliding grooves formed on two connecting plates, each of which has a sliding block slidably installed in one of the two sliding grooves, and each of the two sliding blocks and their corresponding sliding grooves has a spring fixedly installed between them. The shaft is fixedly installed between the two sliding blocks and passes through one of the sliding blocks.

[0020] The anti-resonance component includes two support rods that are fixedly connected to the corresponding swing arm by threads. A column is fixedly installed on each of the two support rods. A sliding sleeve is slidably installed on each of the two columns. A return spring is fixedly installed between each of the two sliding sleeves and the corresponding support rod. A vertical rod is fixedly installed on each of the two sliding sleeves. A counterweight ball is fixedly installed at the bottom of each of the two vertical rods.

[0021] Two fixing components are fixedly installed on the gas storage tank. A fixed pulley is rotatably installed on each of the two fixing components. A winch with locking function is rotatably installed on each of the two swing arms. A first steel wire rope is wound on the winch. The first steel wire rope passes around the corresponding fixed pulley and is fixedly connected to the sliding sleeve on the other swing arm. A downward pressure adjustment component that cooperates with two counterweight balls is installed on the gas storage tank.

[0022] The lower pressure regulating component includes an exhaust cylinder fixedly connected to the gas storage tank, an automatically resetting piston disc slidably installed inside the exhaust cylinder, an exhaust pipe fixedly connected to the exhaust cylinder, and a pressure control valve fixedly installed on the exhaust pipe.

[0023] A movable rod is slidably installed on the outside of the gas storage tank. The movable rod is fixedly connected to the piston disc. A spring rod is fixedly installed at the bottom of the movable rod. A connecting block is fixedly installed at the bottom of the spring rod. An elastic telescopic rod is fixedly installed on both sides of the connecting block. A stop block that abuts against the counterweight ball is fixedly installed at the telescopic ends of the two elastic telescopic rods. The two stop blocks are slidably connected to the corresponding uprights.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This sawing mechanism for metal fastener processing, by incorporating a vibration suppression module, utilizes the pressure rollers to abut against both sides of the saw blade. Combined with the multi-stage buffering effect of the sliding column, damping sleeve, and tension spring in the elastic damping structure, the saw blade vibration is initially weakened. When the saw blade vibrates, the vibration energy is transmitted through the pressure rollers to the elastic damping structure, where it is absorbed and dissipated by the damping sleeve and tension spring. This effectively suppresses high-frequency chatter of the saw blade, significantly reduces the transmission of vibration to the workpiece and fixture, significantly improves the flatness and dimensional accuracy of the saw cut surface, and extends the service life of the saw blade. It solves the problem of direct vibration transmission and poor suppression effect caused by rigid clamping in existing technologies.

[0026] 2. The sawing mechanism for metal fastener processing incorporates an anti-resonance component. Through the transmission and coordination of the winch, the first wire rope, the fixed pulley, and the sliding sleeve, the vibration of the two swing arms is transmitted to the counterweight ball on the opposite side via the wire rope. Under the inertia of the counterweight ball and the reaction action of the return spring, the swing arms are suppressed in opposite directions, forming an anti-resonance effect. At the same time, the anti-resonance frequency can be changed by adjusting the locking position of the winch, achieving adaptive suppression of different vibration frequencies. This structure can automatically adjust the suppression intensity according to the changes in vibration frequency during the sawing process, significantly enhancing the system's adaptability to different working conditions.

[0027] 3. The sawing mechanism for metal fastener processing is equipped with an energy storage component. The reciprocating movement of the upper end of the swing arm pulls the piston in the air injection cylinder through the second steel wire rope, and air is injected into the air storage tank through the one-way pipe. The kinetic energy of the saw blade vibration is converted into high-pressure air for storage, realizing the effective recovery and utilization of vibration energy. At the same time, the air pressure in the air storage tank increases with the increase of vibration intensity. Through the exhaust cylinder, spring rod and stop block, the air pressure is converted into a continuous downward pressure on the counterweight ball, automatically adjusting the anti-resonance suppression intensity. This realizes a positive feedback regulation mechanism where the stronger the vibration, the stronger the suppression, which significantly improves the energy utilization rate and the level of system intelligence. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the sawing mechanism for processing metal fasteners proposed in this invention;

[0029] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0030] Figure 3 for Figure 2 Detailed schematic diagram of the structure after rotation at a certain angle;

[0031] Figure 4 for Figure 2 Detailed schematic diagram of the structure after removing the protective cover and control unit;

[0032] Figure 5 for Figure 4 Detailed enlarged structural diagram of the medium-sized sawing unit;

[0033] Figure 6 for Figure 5 Detailed schematic diagram of the structure after rotation at a certain angle;

[0034] Figure 7 for Figure 6 Detailed schematic diagram of the structure after rotation at a certain angle;

[0035] Figure 8 for Figure 5 Detailed schematic diagram of the enlarged structure of the positioning component;

[0036] Figure 9 for Figure 8 Detailed enlarged structural diagram of the second positioning clamp, the second limiting module, and the jitter suppression module;

[0037] Figure 10 for Figure 9 Detailed schematic diagram of the structure after removing the second positioning clip and rotating it by a certain angle;

[0038] Figure 11 for Figure 10 Detailed schematic diagram of the structure after rotation at a certain angle;

[0039] Figure 12 for Figure 11 Detailed schematic diagram of the structure after rotation at a certain angle;

[0040] Figure 13 for Figure 10 Detailed schematic diagram of the planar structure along one of the angles;

[0041] Figure 14 for Figure 10 Detailed schematic diagram of the structure after removing the fixing block, limiting wheel and support frame and rotating it at a certain angle;

[0042] Figure 15 for Figure 14 Detailed schematic diagram of the structure after rotation at a certain angle;

[0043] Figure 16 for Figure 15 Detailed schematic diagram of the structure after removing one side of the mounting bracket;

[0044] Figure 17 for Figure 16 Detailed enlarged structural diagram of section A;

[0045] Figure 18 for Figure 16 Detailed schematic diagram of the structure after removing the connecting rod assembly, bolt adjustment structure, and mounting bracket on the other side;

[0046] Figure 19 for Figure 18 Detailed schematic diagram of the structure after removing the clamping plate and other parts on the clamping plate and rotating it at a certain angle;

[0047] Figure 20 for Figure 19 Detailed schematic diagram of the structure after rotation at a certain angle;

[0048] Figure 21 for Figure 19 Detailed schematic diagram of the structure after removing the swing arm and rotating it at a certain angle.

[0049] In the diagram: 1. Sawing machine; 2. Control unit; 3. Feeding unit; 4. Sawing unit; 5. Protective cover; 6. Unloading hopper; 7. Straightening unit; 8. Drive unit; 9. Driven wheel; 10. Drive wheel; 11. Saw blade; 12. Positioning assembly; 13. Electric actuator; 14. Hydraulic rod; 15. Truss; 16. First positioning clamp; 17. Second positioning clamp; 18. First limit module; 19. Second limit module; 20. Vibration suppression module; 21. Fixing block; 22. Limiting wheel; 23. Support frame; 24. Linkage group; 25. Pressure roller; 26. Air storage unit. 27. Tank; 28. Clamping plate; 29. ​​Elastic damping structure; 30. Bolt adjustment structure; 31. Sliding column; 32. Wheel frame; 33. Connecting plate; 34. Tension spring; 35. Sliding block; 36. Shaft; 37. Swing arm; 38. Winch reel; 39. First wire rope; 40. Fixed pulley; 41. Sliding sleeve; 42. Return spring; 43. Air injection cylinder; 44. Second wire rope; 45. Air exhaust cylinder; 46. Pressure control valve; 47. Support rod; 48. Counterweight ball; 49. Moving rod; 50. Spring rod; 51. Connecting block; 52. Elastic telescopic rod; 53. Abutment block. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0051] Please see Figures 1 to 12 This invention provides a technical solution: a sawing mechanism for processing metal fasteners from metal blanks. This sawing mechanism addresses the reflection problem in processing reflective metal blanks by offering a novel approach. Specific implementation details are as follows:

[0052] Example 1:

[0053] Reference Figures 1-7 A sawing mechanism for processing metal fasteners includes a sawing machine 1, a control unit 2, a feeding unit 3, and a straightening unit 7 mounted on the sawing machine 1, and also includes a sawing unit 4, a hopper 6, and a drive unit 8 mounted on the sawing machine 1; a protective cover 5 that cooperates with the sawing unit 4 is mounted on the sawing machine 1, and a pressing unit that cooperates with the sawing unit 4 is mounted on the sawing machine 1 to drive the sawing unit 4 to move vertically for sawing operations; the sawing unit 4 includes a driven wheel 9 and a drive wheel 10, the drive unit 8 is used to drive the drive wheel 10 to rotate, a saw blade 11 is sleeved between the driven wheel 9 and the drive wheel 10, and a positioning component 12 that cooperates with the saw blade 11 is mounted on the sawing machine 1;

[0054] During the actual operation of the sawing mechanism, the feeding unit 3 conveys the metal fastener blank to be processed to the sawing station along the predetermined direction. The straightening unit 7 corrects the position of the blank before it enters the sawing area to ensure that the relative position between the blank and the saw blade 11 meets the processing accuracy requirements.

[0055] The drive unit 8 serves as a power source, and its output end is connected to the drive wheel 10 for transmission. The drive wheel 10 drives the saw blade 11, which is sleeved between the drive wheel 10 and the driven wheel 9, to achieve high-speed circular rotation. The driven wheel 9 is passively rotated under the drive of the saw blade 11, which plays a supporting and guiding role.

[0056] The pressing unit starts when sawing begins, driving the entire sawing unit 4 to move vertically downwards, causing the high-speed rotating saw blade 11 to gradually approach and contact the workpiece, completing the sawing feed action. The protective cover 5 is installed on the outside of the sawing unit 4 to effectively prevent metal chips generated during sawing from flying and to prevent operators from accidentally touching the operating saw blade 11, ensuring operational safety.

[0057] The positioning component 12 is installed on the sawing machine 1 and cooperates with the saw blade 11. Its function is to constrain and guide the running trajectory of the saw blade 11 during the sawing process, prevent the saw blade 11 from swinging or deviating under the action of cutting force, and ensure that the saw blade 11 always cuts along the predetermined path.

[0058] By integrating the functions of feeding, straightening, sawing, and unloading onto the same sawing machine 1, a complete automated sawing production line is formed. This solves the problem of low production efficiency caused by the dispersed processes of traditional sawing equipment and the need for manual positioning and transportation. At the same time, the active constraint of the saw blade 11 by the positioning component 12 provides a basic guarantee for subsequent high-precision sawing.

[0059] Example 2:

[0060] Based on Embodiment 1, the positioning component 12 includes a truss 15, a first positioning clamp 16 and a second positioning clamp 17 slidably mounted on the truss 15, a first limiting module 18 that cooperates with the saw blade 11 is installed at the bottom of the first positioning clamp 16, and a second limiting module 19 that cooperates with the saw blade 11 and a vibration suppression module 20 are installed at the bottom of the second positioning clamp 17.

[0061] When the positioning assembly 12 is working, the truss 15 is fixedly installed on the sawing machine 1 as the supporting frame of the entire positioning assembly 12. The first positioning clamp 16 and the second positioning clamp 17 are slidably installed on the truss 15 respectively. The distance between the two can be adjusted according to the different sawing positions to adapt to the processing requirements of workpieces of different specifications.

[0062] The first limiting module 18 fixedly installed at the bottom of the first positioning clamp 16 and the second limiting module 19 fixedly installed at the bottom of the second positioning clamp 17 respectively provide lateral constraints on the saw blade 11 from different positions. The two limiting modules work together to form clamping and limiting points at multiple positions of the saw blade 11, effectively preventing the saw blade 11 from shifting laterally when it is running at high speed and under cutting force.

[0063] The bottom of the second positioning clamp 17 is also equipped with a vibration suppression module 20. This module is arranged adjacent to the second limiting module 19 in position, so that the saw blade 11 immediately enters the action area of ​​the vibration suppression module 20 after the second limiting module 19 completes the lateral limiting, realizing a continuous processing flow of limiting first and then suppressing vibration.

[0064] The positioning component 12 integrates the two major functions of lateral limiting and vibration suppression of the saw blade 11. Compared with the existing technology that only relies on a single clamping point to constrain the saw blade 11, this solution significantly enhances the running stability of the saw blade 11 throughout the sawing process through a multi-point, multi-functional composite positioning structure. It solves the technical problem that the saw blade 11 is prone to large swings due to the lack of sufficient support points when operating over long spans.

[0065] A hydraulic rod 14 is fixedly installed on the saw 1. The driving end of the hydraulic rod 14 is rotatably connected to the driven wheel 9, which is used to adjust the tension of the saw blade 11.

[0066] During operation, the cylinder end of the hydraulic rod 14 is fixedly mounted on the saw 1, and its piston rod end is connected to the wheel axle of the driven wheel 9 through a rotating connector. When it is necessary to adjust the tension of the saw blade 11, the hydraulic rod 14 extends or retracts its piston rod according to the command of the control unit 2, pushing the driven wheel 9 to move relative to the drive wheel 10, thereby changing the center distance between the drive wheel 10 and the driven wheel 9. When the center distance increases, the saw blade 11 sleeved between the two is further tightened, and the tension increases. When the center distance decreases, the tension of the saw blade 11 decreases accordingly.

[0067] An electric push rod 13 is fixedly installed on the sawing machine 1. The electric push rod 13 is fixedly connected to the truss 15 and is used to adjust the position of the positioning component 12. During operation, the housing end of the electric push rod 13 is fixedly installed on the sawing machine 1, and its telescopic rod end is fixedly connected to the truss 15. When processing metal fasteners of different specifications or when it is necessary to adjust the sawing position, the control unit 2 sends an action command to the electric push rod 13. The electric push rod 13 extends or retracts its telescopic rod according to the command, pushing the truss 15 and the first positioning clamp 16, the second positioning clamp 17, the first limit module 18, the second limit module 19 and the vibration suppression module 20 installed on it to move as a whole along the predetermined direction of the sawing machine 1.

[0068] Reference Figures 8-12Both the first limiting module 18 and the second limiting module 19 include a fixed block 21 and two limiting wheels 22. The fixed block 21 is fixedly connected to the corresponding first positioning clamp 16 and second positioning clamp 17. The two limiting wheels 22 are rotatably mounted on the corresponding fixed block 21. The distance between the two limiting wheels 22 located on the same fixed block 21 is the same as the thickness of the saw blade 11. Each limiting wheel 22 is fitted with a rubber ring on its outer ring.

[0069] During operation, the saw blade 11 passes between two limiting wheels 22 on the same fixed block 21. Since the distance between the two limiting wheels 22 is exactly equal to the thickness of the saw blade 11, the two sides of the saw blade 11 contact the outer rings of the two limiting wheels 22 respectively, and the limiting wheels 22 form a lateral clamping constraint on the saw blade 11.

[0070] When the saw blade 11 rotates at high speed, the limit wheel 22 rotates passively with the movement of the saw blade 11, converting sliding friction into rolling friction, which greatly reduces frictional resistance and wear.

[0071] The rubber ring fitted on the outer ring of the limiting wheel 22 is in direct contact with the surface of the saw blade 11. The rubber ring has a certain elastic deformation capacity, which can absorb part of the impact energy through elastic deformation when the saw blade 11 produces a small lateral displacement. At the same time, the high friction coefficient of the rubber material can provide sufficient lateral restraint force to prevent the saw blade 11 from sliding laterally under the action of cutting force.

[0072] In addition, the flexible contact of the rubber ring can effectively reduce the rigid collision between the limit wheel 22 and the saw blade 11, and avoid scratches or damage on the surface of the saw blade 11. The fixing block 21 serves as the mounting base for the limit wheel 22, and it is fixedly connected to the corresponding first positioning clip 16 or second positioning clip 17, ensuring that the limit wheel 22 is stable in position during operation.

[0073] This limiting module achieves precise lateral positioning of the saw blade 11 through a combination of rolling clamping and elastic contact, while minimizing the additional resistance of the limiting structure to the operation of the saw blade 11. This solves the technical problems of rigid clamping structures in the prior art that easily damage the saw blade 11 and increase running resistance.

[0074] Reference Figures 9-21 The vibration suppression module 20 includes two mounting brackets fixedly mounted on the second positioning clamp 17 via a support frame 23. A connecting rod assembly 24 is installed between the two mounting brackets, and a bolt adjustment structure 29 for adjusting the connecting rod assembly 24 is installed between the two mounting brackets. Two clamping plates 27 are installed at the bottom of the connecting rod assembly 24. A wheel frame 31 is installed on each of the two clamping plates 27 via an elastic damping structure 28. A pressure roller 25 that abuts against the saw blade 11 is rotatably mounted on each of the two wheel frames 31.

[0075] When the vibration suppression module 20 is in operation, the two mounting brackets are fixed on the second positioning clamp 17, providing a stable mounting base for the entire module;

[0076] The linkage 24 is connected between two mounting brackets. Its length and angle can be adjusted by the bolt adjustment structure 29, thereby changing the initial position and spacing of the two clamping plates 27 to adapt to the clamping requirements of saw blades 11 of different thicknesses.

[0077] Two clamping plates 27 are respectively equipped with wheel frames 31 through elastic damping structures 28. The pressure rollers 25 rotatably mounted on the two wheel frames 31 clamp the saw blade 11 from both sides and abut against the two side surfaces of the saw blade 11.

[0078] When the saw blade 11 vibrates during the sawing process, the vibration displacement is transmitted to the wheel frame 31 through the pressure roller 25, and the wheel frame 31 then transmits the vibration to the elastic damping structure 28. Since the pressure roller 25 and the saw blade 11 always remain in contact, the vibration energy of the saw blade 11 is continuously transmitted to the elastic damping structure 28 for absorption and dissipation, rather than being directly transmitted to the second positioning clamp 17 of the rigid structure.

[0079] The vibration suppression module 20 directly applies suppression force at the vibration source location of the saw blade 11. Compared with the indirect suppression of vibration from the workpiece side or the clamp side, it has the advantages of fast response speed and direct and obvious suppression effect. The rotating installation method of the pressure roller 25 ensures that while providing clamping and suppression functions, it will not generate additional frictional resistance to the high-speed operation of the saw blade 11, thus solving the technical problem that the vibration suppression structure in the prior art accelerates the wear of the saw blade 11 due to excessive friction.

[0080] The elastic damping structure 28 includes multiple sliding columns 30 slidably mounted on the clamping plate 27. Each sliding column 30 is fixedly installed with a damping sleeve between it and the clamping plate 27. A connecting plate 32 is fixedly installed between the multiple sliding columns 30 and the clamping plate 27. Two tension springs 33 are fixedly installed between the two connecting plates 32 and the clamping plate 27. An energy storage component that cooperates with the connecting plates 32 on the two clamping plates 27 is installed on the mounting frame.

[0081] During operation, when the saw blade 11 vibrates and is transmitted to the connecting plate 32 through the pressure roller 25 and the wheel frame 31, the connecting plate 32 is displaced relative to the clamping plate 27 under the action of the vibration force. Since multiple sliding columns 30 are fixedly installed on the connecting plate 32 and slide through the guide holes on the clamping plate 27, the displacement of the connecting plate 32 drives the sliding columns 30 to slide along the guide holes of the clamping plate 27.

[0082] The damping sleeve is fixedly installed between the sliding column 30 and the clamping plate 27. During the sliding process of the sliding column 30, the damping medium (such as silicone oil or high viscosity grease) inside the damping sleeve undergoes shear deformation, converting the vibration kinetic energy into heat energy and dissipating it, thus achieving primary damping buffering. At the same time, the two tension springs 33 are stretched or compressed when the connecting plate 32 is displaced relative to the clamping plate 27. The elastic restoring force of the spring generates a reverse force on the displacement of the connecting plate 32, inhibiting the connecting plate 32 from continuing to move, thereby achieving secondary elastic buffering.

[0083] The damping sleeve and the tension spring 33 work together. The damping sleeve is responsible for absorbing high-frequency small-amplitude vibration energy, while the tension spring 33 is responsible for suppressing low-frequency large-amplitude displacement. The two complement each other in different frequency ranges, forming a wide-band vibration suppression effect.

[0084] The elastic damping structure 28 effectively solves the limitation of a single damping structure being able to cope with vibrations in a specific frequency range through the dual mechanism of damping dissipation and elastic suppression, significantly improving the ability to suppress the complex vibration spectrum of the saw blade 11. In addition, the reciprocating motion generated by the connecting plate 32 during vibration can also serve as a power source to drive the energy storage component, recovering and utilizing the vibration energy that was originally dissipated, thus achieving an organic combination of vibration suppression and energy harvesting.

[0085] The energy storage component includes a gas storage tank 26 fixedly installed on a mounting frame. Two gas injection cylinders 42 are fixedly connected to the gas storage tank 26. An automatic reset piston is slidably installed in each of the two gas injection cylinders 42, and a one-way pipe is connected to each of the two gas injection cylinders 42. A shaft 35 is installed on each of the two sets of connecting plates 32 through a sliding member. A swing arm 36 is rotatably installed on each of the two clamping plates 27. The two swing arms 36 are rotatably connected to the corresponding shafts 35. A second steel wire rope 43 is fixedly installed between the ends of the two swing arms 36 and the corresponding automatic reset pistons. An anti-resonance component is installed between the two swing arms 36.

[0086] When the energy storage component is working, the reciprocating vibration generated by the connecting plate 32 drives the shaft 35 to reciprocate through the sliding member. The shaft 35 is rotatably connected to one end of the swing arm 36. The swing arm 36 is rotatably mounted on the clamping plate 27, and the mounting point on the clamping plate 27 serves as the rotation fulcrum of the swing arm 36.

[0087] Since the shaft 35 is close to the lower end of the swing arm 36 (i.e. the side close to the clamping plate 27), while the upper end of the swing arm 36 is far from the clamping plate 27, according to the lever principle, the displacement of the lower end of the swing arm 36 is small. After being amplified by the rotation fulcrum, the displacement of the upper end of the swing arm 36 is significantly increased, which plays a role in amplifying the vibration stroke.

[0088] When the upper end of the swing arm 36 moves back and forth, the automatic reset piston in the air injection cylinder 42 is pulled back and forth by the second steel wire rope 43. When the piston is pulled out, the internal volume of the air injection cylinder 42 increases, generating negative pressure, and air is drawn in from the outside through the one-way tube. When the piston is pushed back under the action of the reset force, the internal volume of the air injection cylinder 42 decreases, the air is compressed and pressed into the air storage tank 26 through the one-way tube for storage. This process is repeated. Each vibration of the swing arm 36 drives the piston to complete a complete air intake-compression-injection cycle through the second steel wire rope 43, continuously converting the mechanical vibration energy into the internal energy of compressed air for storage.

[0089] The energy storage component cleverly transforms the vibration energy that was originally dissipated as heat and noise into high-pressure gas with practical value, achieving efficient energy recovery and utilization. The two air injection cylinders 42 correspond to the two swing arms 36 respectively, working independently without interfering with each other. Even if one swing arm 36 has a smaller displacement due to asymmetrical vibration of the saw blade 11, the other air injection cylinder 42 can still work normally, ensuring the reliability of energy recovery. This solves the technical problem of complete waste of vibration energy in the prior art and improves the energy efficiency of the equipment.

[0090] The sliding component includes sliding grooves formed on two connecting plates 32, a sliding block 34 slidably installed in each of the two sliding grooves, a spring fixedly installed between each of the two sliding blocks 34 and the corresponding sliding groove, and a shaft 35 fixedly installed between the two sliding blocks 34, with the shaft 35 passing through one of the sliding blocks 34.

[0091] During operation, when the connecting plate 32 is displaced by the vibration of the saw blade 11, the shaft 35 achieves adaptive sliding on the connecting plate 32 through the cooperation of the sliding block 34 and the sliding groove.

[0092] When the connecting plate 32 vibrates up and down, the position of the shaft 35 relative to the connecting plate 32 needs to be adjusted in real time to adapt to the rotation trajectory of the swing arm 36. The sliding of the sliding block 34 in the groove provides the shaft 35 with the degree of freedom along the length of the connecting plate 32, so that while the shaft 35 moves up and down with the connecting plate 32, it can also slide laterally in the groove according to the horizontal component force generated by the rotation of the swing arm 36, thereby eliminating the additional constraint force caused by the mismatch of the motion trajectory between the shaft 35 and the swing arm 36, and ensuring the smoothness of power transmission.

[0093] The spring is fixedly installed between the sliding block 34 and the slide groove, providing elastic reaction force when the sliding block 34 slides, so that the sliding block 34 has an automatic reset tendency, ensuring that the shaft 35 can return to the initial position after the vibration stops;

[0094] The shaft 35 is fixedly installed between the two sliding blocks 34, ensuring the motion synchronization between the two connecting plates 32. The design of this sliding component solves the problem of jamming or additional loss caused by the inconsistency between the vibration direction and the swing direction under rigid connection, and improves the working reliability and transmission efficiency of the energy storage component under complex vibration conditions.

[0095] The anti-resonance component includes two support rods 46 that are threadedly fixedly connected to the corresponding swing arm 36. Each support rod 46 has a column fixedly mounted on it. Each column has a sliding sleeve 40 slidably mounted on it. Each sliding sleeve 40 and the corresponding support rod 46 has a return spring 41 fixedly mounted between them. Each sliding sleeve 40 has a vertical rod fixedly mounted on it. Each vertical rod has a counterweight ball 47 fixedly mounted at its bottom. The gas storage tank 26 has two fixing parts fixedly mounted on it. Each fixing part has a fixed pulley 39 rotatably mounted on it. Each swing arm 36 has a locking rope disc 37 rotatably mounted on it. A first steel wire rope 38 is wound around the rope disc 37. The first steel wire rope 38 passes around the corresponding fixed pulley 39 and is fixedly connected to the sliding sleeve 40 on the other swing arm 36. The gas storage tank 26 is equipped with a downward pressure adjustment component that cooperates with the two counterweight balls 47.

[0096] During the operation of the anti-resonance component, when the two swing arms 36 reciprocate due to the vibration of the saw blade 11, since the two swing arms 36 are respectively installed on both sides of the saw blade 11, the displacement direction and displacement magnitude of the upper ends of the two are basically the same. The swing of the upper end of each swing arm 36 is transmitted through the winch 37 on it and the first steel wire rope 38 wound on the winch 37. After the first steel wire rope 38 extends out from the winch 37, it passes around the fixed pulley 39 fixed on the gas storage tank 26. The fixed pulley 39 changes the direction of the first steel wire rope 38, so that it connects to the sliding sleeve 40 on the other swing arm 36.

[0097] When one of the swing arms 36 swings upward, it releases the first steel wire rope 38 through the winch 37, while the other swing arm 36 winds up the first steel wire rope 38 through its winch 37, pulling the sliding sleeve 40 on that side to slide downward along the column. The return spring 41 is compressed. When the sliding sleeve 40 slides downward, it drives the upright and the counterweight ball 47 to move downward synchronously. The counterweight ball 47 generates inertial force during the downward acceleration. This inertial force reacts to the swing arm 36 through the support rod 46, producing a reverse inhibition effect on its swing.

[0098] Since the two swing arms 36 swing in opposite directions, and the cross connection of the first wire rope 38 causes the inertial forces of the two counterweight balls 47 to act on the other swing arm 36 respectively, a mutually canceling anti-resonance effect is formed.

[0099] The winch disc 37 has a locking function. The operator can adjust the locking position of the winch disc 37 according to the vibration frequency of the saw blade 11 to change the effective working length of the first wire rope 38, thereby adjusting the working frequency of the anti-resonance system to match the natural frequency of the saw blade 11 and achieve the best vibration suppression effect. This anti-resonance component solves the technical problem that the passive vibration absorption structure can only suppress a single fixed frequency and cannot adapt to the vibration frequency changes during the sawing process.

[0100] The downward pressure regulating component includes an exhaust cylinder 44 fixedly connected to the air tank 26, an automatically resetting piston disc slidably installed inside the exhaust cylinder 44, an exhaust pipe fixedly connected to the exhaust cylinder 44, and a pressure control valve 45 fixedly installed on the exhaust pipe; a moving rod 48 is slidably installed outside the air tank 26, the moving rod 48 is fixedly connected to the piston disc, a spring rod 49 is fixedly installed at the bottom of the moving rod 48, a connecting block 50 is fixedly installed at the bottom of the spring rod 49, an elastic telescopic rod 51 is fixedly installed on both sides of the connecting block 50, and a stop block 52 that abuts against the counterweight ball 47 is fixedly installed at the telescopic end of each of the two elastic telescopic rods 51, and the two stop blocks 52 are slidably connected to the corresponding uprights;

[0101] During operation, as the energy storage component continuously injects compressed air into the air storage tank 26, the air pressure inside the air storage tank 26 gradually increases.

[0102] The exhaust cylinder 44 is fixedly connected to the air tank 26. Therefore, the air pressure inside the exhaust cylinder 44 is equal to the air pressure inside the air tank 26. When the air pressure inside the air tank 26 increases, the piston disc inside the exhaust cylinder 44 moves downward under the action of air pressure, overcoming its automatic reset elasticity. When the piston disc moves downward, it drives the moving rod 48 fixedly connected to it to slide downward synchronously.

[0103] When the moving rod 48 slides downward, it pushes the spring rod 49, the connecting block 50, and the elastic telescopic rods 51 and the abutment block 52 on both sides of the connecting block 50 to move downward as a whole. This causes the abutment block 52 to apply a downward pressure to the counterweight ball 47. This downward pressure increases the contact force between the counterweight ball 47 and the upright rod and the sliding sleeve 40, so that the counterweight ball 47 needs to overcome greater resistance to produce displacement during vibration. This is equivalent to increasing the inertial force of the counterweight ball 47 and the system damping, thereby improving the suppression strength of anti-resonance.

[0104] The pressure control valve 45 is installed on the exhaust pipe. When the air pressure in the air tank 26 exceeds the preset threshold of the pressure control valve 45, the pressure control valve 45 will automatically open to release pressure and prevent the air pressure in the air tank 26 from being too high, which could lead to safety risks. By adjusting the threshold of the pressure control valve 45, the operator can set the maximum working pressure of the air tank 26 according to the actual working conditions, thereby controlling the maximum downward pressure borne by the counterweight ball 47 and realizing the adjustable and controllable anti-resonance suppression intensity.

[0105] The downpressure regulating component uses the compressed air pressure stored in the air tank 26 as the control signal source, realizing a positive feedback regulation mechanism that the stronger the vibration, the more air is injected, the higher the air pressure, the greater the downpressure, and the stronger the anti-resonance suppression. This solves the technical problem that the vibration suppression device cannot adaptively adjust the suppression force according to the vibration intensity.

[0106] The specific operating steps of this device are as follows:

[0107] The feeding unit 3 feeds the metal parts to the bottom of the sawing unit 4 and straightens the metal parts through the straightening unit 7. Then the drive unit 8 is started, which drives the drive wheel 10 to rotate. The drive wheel 10 drives the saw blade 11 to rotate. Then the pressing unit is started, which drives the saw blade 11 to move down, so that the saw blade 11 comes into contact with the metal parts and performs sawing operation on the metal parts.

[0108] During the sawing process, the saw blade 11 is clamped and limited by the two limiting wheels 22 in the first limiting module 18 and the second limiting module 19 to prevent the saw blade 11 from deviating. However, during the sawing process, due to uneven force, the saw blade 11 will vibrate. At this time, the slight displacement caused by the vibration will cause the pressure roller 25 and the wheel frame 31 to move slightly, thereby driving the slide column 30 to move. Under the action of the damping sleeve, the connecting plate 32 and the tension spring 33, the amplitude is weakened, which can effectively suppress the shaking of the saw blade 11.

[0109] At the same time, the vibration of the sliding column 30 drives the connecting plate 32 to vibrate, which in turn drives the lower end of the swing arm 36 to vibrate through the shaft 35. At this time, the sliding block 34 will reciprocate in the groove under the action of the spring and the shaft 35. The rotation fulcrum of the swing arm 36 is close to the clamping plate 27, so the displacement of the upper end of the swing arm 36 is greater than that of the lower end of the swing arm 36, which plays the role of amplifying the vibration stroke. The reciprocating movement of the upper end of the swing arm 36 will pull the piston in the air injection cylinder 42 to reciprocate through the second steel wire rope 43, and inject air into the air storage tank 26 through the one-way pipe, which increases the air pressure in the air storage tank 26. This process converts the vibration of the swing arm 36 into high-pressure air, which can not only effectively suppress the vibration of the saw blade 11, but also store energy and realize effective energy recovery.

[0110] When the swing arm 36 vibrates, the displacement direction and displacement distance of the upper parts of the two swing arms 36 are the same. At this time, the sliding sleeve 40 will be pulled to slide on the column through the first steel wire rope 38, and the return spring 41 will be compressed. Since the fixed pulley 39 changes the travel direction of the first steel wire rope 38, the sliding sleeve 40 will move closer to the swing arm 36 on which it is installed. Under the inertia of the counterweight ball 47 and the counter-pressure of the return spring 41, it will exert a directional pressure on the swing arm 36 on which it is installed, which can effectively suppress the displacement of the swing arm on which it is installed, and has an anti-resonance effect, which can effectively suppress vibration.

[0111] As the air pressure inside the gas tank 26 increases, when the air pressure exceeds the threshold of the pressure control valve 45, the exhaust pipe begins to release air. The pressure control valve 45 can automatically adjust the pressure threshold inside the gas tank 26 as needed. Within the pressure threshold range, the piston disc inside the exhaust cylinder 44 will always be in a downward state, continuously pushing and pressurizing the moving rod 48. The moving rod 48 will pressurize the spring rod 49, which will pressurize the connecting block 50. The connecting block 50 will pressurize the abutment block 52 through the elastic telescopic rod 51, which will pressurize the counterweight ball 47, increasing the downward force of the counterweight ball 47 and thus increasing the inertial force of the counterweight ball 47.

[0112] When the saw blade 11 suddenly vibrates violently during sawing, the air pressure in the air tank 26 suddenly increases. The pressure control valve 45 and the exhaust pipe cannot exhaust the air in time, which will cause the piston disc to suddenly move down, causing the downward pressure of the counterweight ball 47 to suddenly increase and the inertial force to suddenly increase, which has a high-strength suppression capability.

[0113] 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. A sawing mechanism for processing metal fasteners, comprising a saw (1), a control unit (2) mounted on the saw (1), a feeding unit (3), and a straightening unit (7), characterized in that, It also includes a sawing unit (4), a hopper (6), and a drive unit (8) installed on the saw (1); The saw (1) is equipped with a protective cover (5) that cooperates with the sawing unit (4). The saw (1) is equipped with a pressing unit that cooperates with the sawing unit (4) to drive the sawing unit (4) to move vertically to perform sawing operations. The sawing unit (4) includes a driven wheel (9) and a drive wheel (10). The drive unit (8) is used to drive the drive wheel (10) to rotate. A saw blade (11) is sleeved between the driven wheel (9) and the drive wheel (10). A positioning component (12) that cooperates with the saw blade (11) is installed on the sawing machine (1). The positioning component (12) includes a truss (15), a first positioning clamp (16) slidably mounted on the truss (15), and a second positioning clamp (17). The bottom of the first positioning clamp (16) is equipped with a first limiting module (18) that cooperates with the saw blade (11), and the bottom of the second positioning clamp (17) is equipped with a second limiting module (19) that cooperates with the saw blade (11) and a vibration suppression module (20).

2. The sawing mechanism for processing metal fasteners according to claim 1, characterized in that, A hydraulic rod (14) is fixedly installed on the saw (1). The driving end of the hydraulic rod (14) is rotatably connected to the driven wheel (9) and is used to adjust the tension on the saw blade (11).

3. The sawing mechanism for processing metal fasteners according to claim 1, characterized in that, An electric push rod (13) is fixedly installed on the saw (1). The electric push rod (13) is fixedly connected to the truss (15) and is used to adjust the position of the positioning component (12).

4. The sawing mechanism for processing metal fasteners according to claim 1, characterized in that, The first limiting module (18) and the second limiting module (19) each include a fixed block (21) and two limiting wheels (22). The fixed block (21) is fixedly connected to the corresponding first positioning clamp (16) and second positioning clamp (17). The two limiting wheels (22) are rotatably mounted on the corresponding fixed block (21). The distance between the two limiting wheels (22) located on the same fixed block (21) is the same as the thickness of the saw blade (11). Each limiting wheel (22) is fitted with a rubber ring on its outer ring.

5. The sawing mechanism for processing metal fasteners according to claim 1, characterized in that, The vibration suppression module (20) includes two mounting brackets fixedly mounted on the second positioning clamp (17) via a support frame (23). A linkage group (24) is installed between the two mounting brackets, and a bolt adjustment structure (29) for adjusting the linkage group (24) is installed between the two mounting brackets. Two clamping plates (27) are installed at the bottom of the linkage group (24). A wheel frame (31) is installed on each of the two clamping plates (27) via an elastic damping structure (28). A pressure roller (25) that abuts against the saw blade (11) is rotatably installed on each of the two wheel frames (31).

6. The sawing mechanism for processing metal fasteners according to claim 5, characterized in that, The elastic damping structure (28) includes multiple sliding columns (30) slidably mounted on the clamping plate (27). Each sliding column (30) is fixedly mounted with a damping sleeve between it and the clamping plate (27). A connecting plate (32) is fixedly mounted between the multiple sliding columns (30) and the clamping plate (27). Two tension springs (33) are fixedly mounted between the two connecting plates (32) and the clamping plate (27). An energy storage component that cooperates with the connecting plates (32) on the two clamping plates (27) is mounted on the mounting frame.

7. The sawing mechanism for processing metal fasteners according to claim 6, characterized in that, The energy storage component includes a gas storage tank (26) fixedly installed on a mounting frame. Two gas injection cylinders (42) are fixedly connected to the gas storage tank (26). An automatic reset piston is slidably installed in each of the two gas injection cylinders (42), and a one-way pipe is connected to each of the two gas injection cylinders (42). A shaft (35) is installed on each of the two sets of connecting plates (32) through a sliding member. A swing arm (36) is rotatably installed on each of the two clamping plates (27). The two swing arms (36) are rotatably connected to the corresponding shafts (35). A second steel wire rope (43) is fixedly installed between the ends of the two swing arms (36) and the corresponding automatic reset pistons. An anti-resonance component is installed between the two swing arms (36).

8. The sawing mechanism for processing metal fasteners according to claim 7, characterized in that, The sliding component includes a sliding groove formed on two connecting plates (32), and a sliding block (34) is slidably installed in each of the two sliding grooves. A spring is fixedly installed between each of the two sliding blocks (34) and the corresponding sliding groove. The shaft (35) is fixedly installed between the two sliding blocks (34) and passes through one of the sliding blocks (34).

9. The sawing mechanism for processing metal fasteners according to claim 7, characterized in that, The anti-resonance component includes two support rods (46) that are fixedly connected to the corresponding swing arm (36) by threads. A column is fixedly installed on each of the two support rods (46). A sliding sleeve (40) is slidably installed on each of the two columns. A return spring (41) is fixedly installed between each of the two sliding sleeves (40) and the corresponding support rod (46). A vertical rod is fixedly installed on each of the two sliding sleeves (40). A counterweight ball (47) is fixedly installed at the bottom of each of the two vertical rods. Two fixing parts are fixedly installed on the gas storage tank (26). A fixed pulley (39) is rotatably installed on each of the two fixing parts. A locking rope reel (37) is rotatably installed on each of the two swing arms (36). A first steel wire rope (38) is wound on the rope reel (37). The first steel wire rope (38) passes around the corresponding fixed pulley (39) and is fixedly connected to the sliding sleeve (40) on the other swing arm (36). A downward pressure adjustment component that cooperates with the two counterweight balls (47) is installed on the gas storage tank (26).

10. The sawing mechanism for processing metal fasteners according to claim 9, characterized in that, The pressure regulating component includes an exhaust cylinder (44) fixedly connected to the gas storage tank (26), an automatically resetting piston disc is slidably installed inside the exhaust cylinder (44), an exhaust pipe is fixedly connected to the exhaust cylinder (44), and a pressure control valve (45) is fixedly installed on the exhaust pipe. A movable rod (48) is slidably installed on the outside of the gas storage tank (26). The movable rod (48) is fixedly connected to the piston disc. A spring rod (49) is fixedly installed at the bottom of the movable rod (48). A connecting block (50) is fixedly installed at the bottom of the spring rod (49). An elastic telescopic rod (51) is fixedly installed on both sides of the connecting block (50). A stop block (52) that abuts against the counterweight ball (47) is fixedly installed at the telescopic end of each of the two elastic telescopic rods (51). The two stop blocks (52) are slidably connected to the corresponding uprights.

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