A new type of disassembly riveted fastener device

Abstract

The present application relates to riveted fastener dismounting device technical field, especially in a kind of new riveted fastener dismounting device, including dismounting main body, shearing cutter head assembly, drive assembly, lever transmission mechanism and control assembly.The dismounting main body is internally provided with accommodating space, and one end of the accommodating space is provided with shearing position.The shearing cutter head assembly is arranged in the shearing position.The lever transmission mechanism includes connecting block, force arm and rotating shaft, the connecting block is connected with the drive assembly output end, the force arm both ends are respectively connected with the connecting block and the shearing cutter head assembly, and the rotating shaft is arranged in the middle part of the force arm and is rotationally connected with the shearing position.The present application is amplified by lever transmission mechanism and is acted on shearing cutter head assembly (2), the efficient shearing of riveted fastener is removed, and the workpiece damage rate is low.The technical problem of low dismounting efficiency and easy damage of workpiece for bad riveted fastener is solved.

Description

Technical Field

[0001] This invention relates to the field of riveted fastener disassembly equipment, and in particular to a novel riveted fastener disassembly device. Background Technology

[0002] Riveting fasteners are widely used in industries such as automotive manufacturing, aerospace, electronic equipment, and hardware furniture. Riveting fasteners such as rivet nuts and blind rivets enable rapid fastening of thin-plate components under unilateral operation, resulting in high production efficiency and reliable connections. However, in actual production and maintenance, due to assembly errors, product rework, or parts replacement, it is often necessary to remove defective riveted fasteners.

[0003] In related technologies, the removal of defective riveted fasteners mainly employs methods such as grinding, drilling, or manual shearing. Grinding removal easily generates a large amount of metal dust, and the grinding depth is difficult to control, easily damaging the surface plating of the workpiece substrate or the mounting holes. Drilling removal requires aligning the rivet center, which is difficult to operate, and drilling deviation can directly damage the original holes in the workpiece, causing it to be scrapped. Manual shearing relies on the operator's arm strength, and the shearing force is insufficient. For high-strength steel rivets, it is often impossible to cut them in one go, and repeated clamping can easily cause deformation around the riveted parts. The above removal methods are time-consuming, have low single-piece removal efficiency, and have a high workpiece damage rate, seriously affecting rework efficiency and product yield.

[0004] Therefore, how to solve the problem of low removal efficiency and easy damage to workpieces caused by faulty riveted fasteners is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a novel device for disassembling riveted fasteners. By integrating a drive component and a lever transmission mechanism within the disassembly body, the driving power is amplified by the lever and applied to the shearing head component, thereby achieving efficient shearing and disassembly of riveted fasteners. This solves the technical problems of low disassembly efficiency and easy damage to workpieces caused by defective riveted fasteners, thus increasing the disassembly speed and reducing the workpiece damage rate.

[0006] To achieve the above objectives, the present invention provides a novel device for disassembling riveted fasteners, comprising:

[0007] The main body is disassembled, and an internal receiving space is provided, with a shearing position provided at one end of the receiving space; A shearing head assembly is disposed at the shearing position and is used to shear and disassemble riveted fasteners; A drive assembly, fixed to the disassembly body, is used to output drive power; A lever transmission mechanism is disposed between the drive assembly and the shearing head assembly. The lever transmission mechanism is used to convert the power of the drive assembly into the shearing force of the shearing head assembly. The lever transmission mechanism includes a connecting block, a lever arm, and a rotating shaft. The connecting block is connected to the output end of the drive assembly. One end of the lever arm is connected to the connecting block, and the other end of the lever arm is connected to the shearing head assembly. The rotating shaft passes through the middle of the lever arm and is rotatably connected to the shearing position. A control component, electrically connected to the drive component, is used to control the start and stop of the drive component.

[0008] In the above technical solution, the power output by the drive component is transmitted to one end of the lever arm through the connecting block. The lever arm forms a lever structure with the rotation axis as the fulcrum, amplifying the force output by the drive component and transmitting it to the shearing head assembly, enabling the shearing head assembly to obtain a sufficiently large shearing force to complete the cutting of the riveted fastener. The control component is used to control the start and stop of the drive component, allowing the operator to flexibly control the execution and stopping of the shearing action according to the work requirements. The lever transmission mechanism converts the linear motion of the drive component into the opening and closing shearing motion of the shearing head assembly, resulting in a short transmission path, low power loss, and rapid shearing action response.

[0009] Preferably, the lever arm includes a first lever arm component and a second lever arm component, the first lever arm component is disposed above the second lever arm component, and the end of the rotating shaft away from the shearing position is fixed to the first lever arm component and passes through the second lever arm component; the shearing head assembly includes a first cutter head and a second cutter head, the first cutter head is disposed on the first lever arm component, and the second cutter head is disposed on the second lever arm component.

[0010] In the above technical solution, the first and second lever arms are stacked vertically and share the same rotation axis as a fulcrum, forming a double-lever scissor structure. The first cutter head swings with the first lever arm, and the second cutter head swings with the second lever arm; the two cutter heads move towards each other to achieve shearing. The symmetrical arrangement of the two lever arms ensures balanced force during shearing, good centering when the cutter heads close, and a flat shearing surface, avoiding misalignment of the riveted parts or tearing damage to the workpiece caused by unilateral force application. One end of the rotation axis is fixed to the first lever arm and passes through the second lever arm, ensuring that the rotation centers of the two lever arms are completely coaxial and there is no relative offset during the swinging process.

[0011] Preferably, the connecting block includes a first connecting member and a second connecting member, and the driving assembly includes a first driver and a second driver. The first driver is connected to the first connecting member, and the first connecting member is provided with a first sliding groove, which is slidably connected to the end of the first lever arm member away from the rotation axis. The second driver is connected to the second connecting member, and the second connecting member is provided with a second sliding groove, which is slidably connected to the end of the second lever arm member away from the rotation axis.

[0012] In the above technical solution, the first driver and the second driver independently drive the first connector and the second connector, respectively, forming a dual-drive symmetrical arrangement structure. The first driver pushes the first connector to move in a straight line, and the first sliding groove drives the end of the first lever arm to move synchronously and complete the conversion of the swing angle. The second driver pushes the second connector to move synchronously in the opposite direction, and the second sliding groove drives the end of the second lever arm to move. The sliding groove structure converts the linear output motion of the driver into the arc swing motion of the lever arm, eliminating motion interference and ensuring smooth transmission. The symmetrical drive of the first and second drivers enables the first and second lever arms to move synchronously, resulting in a larger shearing force and better motion coordination.

[0013] Preferably, the end of the first sliding groove that is slidably connected to the first lever arm away from the rotation axis is provided with a first connecting groove, and a first sliding rod is provided in the first connecting groove, the first sliding rod being slidably connected to the first sliding groove; the end of the second sliding groove that is slidably connected to the second lever arm away from the rotation axis is provided with a second connecting groove, the second connecting groove being provided with a second sliding rod, the second sliding rod being slidably connected to the second sliding groove.

[0014] In the above technical solution, the first sliding rod passes through the first connecting groove and extends into the first sliding groove, forming a sliding hinge relationship between the first lever arm and the first connecting member. The first sliding rod can roll or slide along the length of the first sliding groove, smoothly converting the linear motion of the first connecting member into the swing motion of the first lever arm, avoiding motion jamming. The second sliding rod and the second sliding groove adopt the same matching method to realize the motion conversion between the second lever arm and the second connecting member. The matching structure of the sliding rod and the sliding groove is easy to process, has a small transmission gap, and high force transmission efficiency.

[0015] Preferably, both the first lever arm and the second lever arm form a lever structure with the rotation axis as the fulcrum. The side of the first lever arm near the first connecting member and the side of the second lever arm near the second connecting member are both power arms. The side of the first lever arm near the first cutter head is a resistance arm, and the side of the second lever arm near the second cutter head is also a resistance arm. The length of the power arm is greater than the length of the resistance arm.

[0016] In the above technical solution, both the first and second lever arms form a force-saving lever with the rotation axis as the fulcrum. The power arm is the distance from the force-applying end of the driver to the center of the rotation axis, and the resistance arm is the distance from the shearing head assembly to the center of the rotation axis. The length of the power arm is greater than the length of the resistance arm. According to the lever balance principle, the shearing force obtained by the shearing head assembly is greater than the driving force output by the driver assembly, thus amplifying the force. By rationally designing the length ratio of the power arm to the resistance arm, several times the shearing force can be obtained with limited drive output, effectively shearing high-strength steel riveted fasteners, while reducing the output power requirements of the driver assembly and making the overall size of the device smaller.

[0017] Preferably, the power arm is provided with a first limiting member, the first limiting member being provided with a limiting groove, the limiting groove being used to limit the extent to which the power arms of the first lever arm and the second lever arm move away from each other.

[0018] In the above technical solution, the first limiting member is disposed in the power arm section of the first and second lever arms, and the limiting groove penetrates through the power arm portions of the first and second lever arms. When the first and second lever arms swing around the rotation axis under the action of the drive assembly, the range of motion of the power arm ends moving away from each other is constrained by the limiting groove, preventing the opening angle of the first and second lever arms from being too large, causing the cutter head opening to exceed the design range. The first limiting member also serves to protect the first and second lever arms from excessive swinging, avoiding overtravel output of the drive assembly that could cause deformation of the first and second lever arms or collision damage to the first and second cutter heads, thereby improving the safety and service life of the device.

[0019] Preferably, a second limiting member is provided between the first connector and the second connector, the second limiting member being used to abut against the first connector and the second connector respectively, so as to limit the sliding range of the first connector and the second connector.

[0020] In the above technical solution, the second limiting member is disposed on the movement path between the first connecting member and the second connecting member. When the first connecting member and the second connecting member slide towards each other to a predetermined position under the push of the first driver and the second driver respectively, the opposite end faces of the first connecting member and the second connecting member abut against the two ends of the second limiting member, and the connecting block stops moving forward. The second limiting member indirectly controls the swing angle of the lever arm by limiting the sliding stroke of the first connecting member and the second connecting member, thereby controlling the minimum closing gap of the shearing head assembly and preventing excessive closing of the shearing head assembly from causing blade chipping or driver overload. The second limiting member also ensures that the movement stroke of the first connecting member and the second connecting member is symmetrical and consistent, so that the centering accuracy is higher when the first and second cutting heads close.

[0021] Preferably, the disassembly body includes an upper cover plate, a lower cover plate, a first guard plate, a second guard plate, a third guard plate, and a fourth guard plate. The upper cover plate is disposed above the lower cover plate. The first guard plate, the second guard plate, the third guard plate, and the fourth guard plate are respectively connected between the upper cover plate and the lower cover plate. The gap between the first guard plate and the second guard plate is the shearing position.

[0022] In the above technical solution, the disassembly body adopts an approximately rhomboid six-sided shell structure formed by splicing together an upper cover plate, a lower cover plate, a first guard plate, a second guard plate, a third guard plate, and a fourth guard plate. The first guard plate, the second guard plate, the third guard plate, and the fourth guard plate are respectively connected to the upper cover plate and the lower cover plate, enclosing an internal accommodating space for installing internal components such as the drive assembly and the lever transmission mechanism. The gap reserved between the first guard plate and the second guard plate constitutes a shearing position, through which the shearing head assembly extends to perform shearing operations. The multi-guard plate splicing structure facilitates the installation and maintenance of internal components, and the shell has good overall rigidity, capable of withstanding shearing reaction forces without deformation.

[0023] Preferably, the control component includes a control switch electrically connected to the control component; the control switch is provided with a trigger exposed on the upper cover plate; the upper cover plate is provided with a handle.

[0024] In the above technical solution, the control switch is located on the upper cover and operated via a trigger. When the operator holds the handle, their fingers can naturally touch the trigger, allowing for single-handed cutting operations. The trigger controls the drive assembly via an electrical signal, resulting in fast response and high control precision. The handle, located on the upper cover, conforms to an ergonomic grip, reducing fatigue during extended work periods and further improving demolition efficiency and operational comfort.

[0025] Preferably, a mounting base is provided between the second guard plate and the third guard plate, and between the first guard plate and the fourth guard plate, and the driving component is fixed to the mounting base; the upper cover plate, the lower cover plate, the first guard plate, the second guard plate, the third guard plate and the fourth guard plate are all provided with ventilation grooves.

[0026] In the above technical solution, mounting bases are respectively disposed at the adjacent junctions of the second and third protective plates, and the first and fourth protective plates, for fixing the drive assembly. This allows the drive assembly to be arranged diagonally within the housing, resulting in a compact and reasonable layout with high space utilization. Ventilation slots on the upper cover, lower cover, first, second, third, and fourth protective plates facilitate air circulation between the inside and outside of the housing. For a pneumatic actuator design, the ventilation slots can promptly expel excess compressed air from the housing, ensuring smooth drive operation. The ventilation slots also facilitate internal heat dissipation, preventing excessively high internal temperatures caused by prolonged continuous operation.

[0027] Compared with related technologies, the present invention has the following beneficial effects: First, it offers high dismantling efficiency. This invention uses a drive component in conjunction with a lever transmission mechanism to output shearing force. The shearing action is triggered by a single button press by the control component, eliminating the need for manual force application by the operator. This significantly reduces the dismantling time of individual riveted fasteners, increasing work efficiency several times compared to manual shearing methods.

[0028] Secondly, the workpiece damage rate is low. This invention uses a scissor-type shearing head assembly driven by a dual-arm symmetry. The shearing head assembly has good alignment when closed, resulting in a flat shearing surface. During the shearing process, the workpiece is subjected to balanced force, which will not cause deformation of the mounting holes or tensile damage to the surrounding substrate, effectively protecting the original structure of the workpiece.

[0029] Third, it has a large shearing force and a compact structure. This invention utilizes the lever principle to save effort, with the length of the power arm being greater than the length of the resistance arm. This amplifies the driving output force several times over and applies it to the shearing head assembly. Within a limited device volume, sufficient shearing force to cut high-strength steel rivets can be obtained. The device as a whole is compact and portable.

[0030] Fourth, the operation is safe and reliable. The present invention features a dual limiting structure with a first limiting member and a second limiting member, which respectively limit the opening amplitude of the lever arm and the sliding stroke of the connecting block, preventing damage to the cutting edge or overload of the drive component caused by excessive opening and closing of the shearing head assembly. The stability and service life of the device are both improved. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the exploded structure of the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the shearing head assembly, drive assembly, lever transmission mechanism and control assembly of the present invention.

[0033] The reference numerals in the figures include: 1. Disassemble the main body; 2. Shearing head assembly; 3. Drive assembly; 4. Lever transmission mechanism; 5. Control assembly; 6. First cutter head; 7. Second cutter head; 8. First lever arm; 9. Second lever arm; 10. Rotating shaft; 11. First driver; 12. Second driver; 13. First connector; 14. Second connector; 15. First sliding groove; 16. Second sliding groove; 17. First sliding rod; 18. Second sliding rod; 19. First limiting member; 20. Second limiting member; 21. Upper cover plate; 22. Lower cover plate; 23. First guard plate; 24. Second guard plate; 25. Third guard plate; 26. Fourth guard plate; 27. Shearing position; 28. Control switch; 29. ​​Trigger; 30. Handle; 31. Mounting base; 32. Vent groove. Detailed Implementation

[0034] refer to Figure 1 and Figure 2 The present invention will be further described in detail below with reference to specific embodiments. These embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0035] Example 1 This embodiment illustrates a novel device for disassembling and riveting fasteners according to the present invention, comprising a disassembly body 1, a shearing head assembly 2, a drive assembly 3, a lever transmission mechanism 4, and a control assembly 5.

[0036] The disassembly body 1 has an internal receiving space, with a shearing position 27 at one end. A shearing head assembly 2 is located at the shearing position 27 of the disassembly body 1 and is used to shear and disassemble riveted fasteners. A drive assembly 3 is fixed to the disassembly body 1 and outputs driving power. A lever transmission mechanism 4 is located between the drive assembly 3 and the shearing head assembly 2, converting the power of the drive assembly 3 into the shearing force of the shearing head assembly 2. The lever transmission mechanism 4 includes a connecting block, a lever arm, and a rotating shaft 10. The connecting block is connected to the output end of the drive assembly 3, one end of the lever arm is connected to the connecting block, and the other end of the lever arm is connected to the shearing head assembly 2. The rotating shaft 10 passes through the middle of the lever arm and is rotatably connected to the shearing position 27 of the disassembly body 1. A control assembly 5 is electrically connected to the drive assembly 3 and controls the start and stop of the drive assembly 3.

[0037] As described above, the disassembly body 1 can be a supporting structure such as a metal shell, plastic shell, frame base, or cast box; the shearing head assembly 2 can be a shearing actuator such as a blade, scissors, jaws, or punch; the drive assembly 3 can be a linear drive device such as an electric push rod, cylinder, hydraulic cylinder, linear motor, or a combination of servo motor and lead screw; and the control assembly 5 can be a control device such as a push button switch, touch switch, remote control switch, or PLC controller. In this embodiment, the disassembly body 1 is a six-sided protective plate spliced ​​shell, the shearing head assembly 2 is a double-blade head, the drive assembly 3 is an electric push rod, and the control assembly 5 is a trigger-type control switch.

[0038] In this embodiment, the drive assembly 3 outputs a linear driving force, which is transmitted to the drive end of the lever arm via the connecting block. The lever arm swings around the rotation shaft 10 as a fulcrum, amplifying the driving force and transmitting it to the shearing head assembly 2, which then performs a closing shearing action. The control assembly 5 controls the start and stop of the drive assembly 3 according to the operator's instructions, achieving flexible control of the shearing action. The lever transmission mechanism 4 has a short transmission path, low power loss, and rapid shearing response.

[0039] The working process of a novel fastener disassembly device in Example 1 is as follows: In the initial state, the two blades of the shearing head assembly 2 are in the open state. The operator aligns the shearing position 27 with the defective riveted part, triggering the control component 5 to start and extend the drive component 3. The drive component 3 pushes the connecting block forward, and the connecting block drives the power arm to swing around the rotation axis 10. During the swing of the power arm, the two blades of the shearing head assembly 2 close towards each other, cutting the threaded part of the riveted part. After the riveted part is cut off, the operator uses the control component 5 to retract the drive component 3, the power arm swings in the opposite direction, and the shearing head assembly 2 opens and resets, completing one disassembly operation.

[0040] Example 2 This embodiment, based on Embodiment 1, describes the specific structure of the double lever arm component and the double cutter head.

[0041] In this embodiment, the lever arm includes a first lever arm 8 and a second lever arm 9, with the first lever arm 8 positioned above the second lever arm 9. One end of the rotating shaft 10, away from the shearing position 27 of the disassembly body 1, is fixed to the first lever arm 8 and passes through the second lever arm 9. The shearing head assembly 2 includes a first cutter head 6 and a second cutter head 7, with the first cutter head 6 positioned on the first lever arm 8 and the second cutter head 7 positioned on the second lever arm 9.

[0042] As described above, both the first lever arm 8 and the second lever arm 9 can be single-arm, double-arm, plate-shaped arm, rod-shaped arm, or L-shaped lever arm structures; the shearing head assembly 2 can be an integral blade, a split blade, a carbide blade, or a high-speed steel blade. In this embodiment, the first lever arm 8 and the second lever arm 9 are both L-shaped lever arms, and the first blade 6 and the second blade 7 are both carbide blades. Among them, the carbide blades include tungsten-cobalt (YG type) blades, tungsten-titanium-cobalt (YT type) blades, tungsten-titanium-tantalum (niobium) (YW type) blades, ultrafine-grained / nanocrystalline carbide blades, and coated carbide blades.

[0043] Tungsten-cobalt (YG type) cutting tips: such as YG6, YG8, YG15, have good toughness and are suitable for impact shearing; Tungsten-titanium-cobalt (YT type) cutting tips: such as YT5 and YT15, have high hardness and wear resistance, and are suitable for high-hardness rivets; Tungsten-titanium-tantalum (niobium) type (YW type) cutter tips: such as YW1, YW2, which are highly versatile; Ultra-fine / nanocrystalline carbide cutting tips: with finer grains, combining high hardness and toughness; Coated carbide cutting tips: such as TiN, TiAlN, and DLC coated cutting tips, to improve wear resistance and lifespan.

[0044] In this embodiment, the first lever arm 8 and the second lever arm 9 are stacked vertically, sharing a common rotating shaft 10 as the fulcrum. When the first lever arm 8 swings, it drives the first cutter head 6 to move synchronously, and when the second lever arm 9 swings, it drives the second cutter head 7 to move synchronously. The opposing movement of the two cutters forms a scissor-like shearing action, resulting in symmetrical and balanced force. During shearing, the riveted parts are not pushed to one side, and the workpiece mounting holes are not subjected to lateral forces, effectively preventing deformation and damage to the hole walls. One end of the rotating shaft 10 is fixed to the first lever arm 8, and the other end passes through the second lever arm 9, ensuring that the rotation centers of the first lever arm 8 and the second lever arm 9 are completely coaxial, resulting in high accuracy of cutter head alignment during swinging.

[0045] Example 3 This embodiment, based on embodiment 2, describes the structure of the dual actuators connected to the sliding groove.

[0046] In this embodiment, the connecting block includes a first connecting member 13 and a second connecting member 14, and the driving assembly 3 includes a first driver 11 and a second driver 12. The first driver 11 is connected to the first connecting member 13, and the first connecting member 13 is provided with a first sliding groove 15, which is slidably connected to the end of the first lever arm 8 away from the rotation axis 10. The second driver 12 is connected to the second connecting member 14, and the second connecting member 14 is provided with a second sliding groove 16, which is slidably connected to the end of the second lever arm 9 away from the rotation axis 10.

[0047] As described above, the connecting block can be a slider, connecting plate, push plate, U-shaped fork, or hinge seat, etc.; the first driver 11 and the second driver 12 can be linear drive devices such as electric push rods, cylinders, hydraulic cylinders, linear motors, or a combination of servo motors and ball screws. In this embodiment, the first connecting member 13 and the second connecting member 14 are both sliders, and the first driver 11 and the second driver 12 are electric push rods as an example.

[0048] In this embodiment, the first driver 11 pushes the first connector 13 to move linearly, and the sidewall of the first sliding groove 15 applies a thrust to the end of the first lever arm 8, causing the first lever arm 8 to swing around the rotation axis 10. The second driver 12 simultaneously pushes the second connector 14 to move linearly in the opposite direction, and the second sliding groove 16 drives the second lever arm 9 to swing in the opposite direction around the rotation axis 10. The first sliding groove 15 converts the linear output of the first driver 11 into the first lever arm 8, and the second sliding groove 16 converts the linear output of the second driver 12 into the arc swing of the second lever arm 9, eliminating motion interference of the drive assembly 3. The first driver 11 and the second driver 12 are diagonally symmetrically arranged, and the first lever arm 8 and the second lever arm 9 move synchronously, with superimposed shearing forces, making it suitable for dismantling high-strength riveted parts.

[0049] Example 4 This embodiment, based on embodiment 3, explains the details of the fit between the sliding rod and the connecting groove.

[0050] In this embodiment, a first connecting groove is provided at the end of the first sliding groove 15 that is slidably connected to the first lever arm 8 away from the rotation axis 10. A first sliding rod 17 is provided in the first connecting groove, and the first sliding rod 17 is slidably connected to the first sliding groove 15. A second connecting groove is provided at the end of the second sliding groove 16 that is slidably connected to the second lever arm 9 away from the rotation axis 10. A second sliding rod 18 is provided in the second connecting groove, and the second sliding rod 18 is slidably connected to the second sliding groove 16.

[0051] As described above, the first sliding rod 17 and the second sliding rod 18 can be cylindrical pins, needle rollers, rollers, wear-resistant sleeves, or rotating shafts with bearings, etc.; the first sliding groove 15 and the second sliding groove 16 can be guide grooves such as straight grooves, waist-shaped grooves, T-shaped grooves, or dovetail grooves. In this embodiment, the first sliding rod 17 and the second sliding rod 18 are cylindrical pins, and the first sliding groove 15 and the second sliding groove 16 are straight grooves, as an example.

[0052] In this embodiment, the first sliding rod 17 passes through the first connecting groove at the end of the first lever arm 8, and both ends of the first sliding rod 17 extend into the first sliding groove 15 of the first connecting member 13. When the first connecting member 13 moves linearly, the first sliding rod 17 rolls or slides along the length direction of the first sliding groove 15, smoothly converting the linear motion into the swinging motion of the first lever arm 8. The second sliding rod 18 and the second sliding groove 16 use the same cooperation method to achieve motion conversion. The rolling or sliding cooperation between the first sliding rod 17 and the first sliding groove 15, and the rolling or sliding cooperation between the second sliding rod 18 and the second sliding groove 16, achieve low frictional resistance between the sliding rod and the sliding groove, high transmission efficiency, low operating noise, and simple maintenance.

[0053] Example 5 This embodiment, based on embodiment 3, illustrates the structural design for lever force amplification.

[0054] In this embodiment, both the first lever arm 8 and the second lever arm 9 form a lever structure with the rotation axis 10 as the fulcrum. The side of the first lever arm 8 near the first connecting member 13 and the side of the second lever arm 9 near the second connecting member 14 are both power arms. The side of the first lever arm 8 near the first cutter head 6 is a resistance arm, and the side of the second lever arm 9 near the second cutter head 7 is also a resistance arm. The length of the power arm is greater than the length of the resistance arm.

[0055] As described above, the length ratio of the power arm to the resistance arm can be designed according to the actual shearing force requirements, for example, it can be 2:1, 3:1, 4:1 or a larger ratio. In this embodiment, the power arm length is greater than the resistance arm length, and the ratio of the power arm to the resistance arm length is 4:1.

[0056] In this embodiment, the length of the power arm is the distance from the center of the rotating shaft 10 to the driving end of the lever arm, and the length of the resistance arm is the distance from the center of the rotating shaft 10 to the shearing end of the shearing head assembly 2. The length of the power arm is greater than the length of the resistance arm, forming a force-saving lever. According to the lever balance condition, the shearing force obtained at the shearing end of the shearing head assembly 2 is the output force of the driving component 3 multiplied by the ratio of the lengths of the power arm and the resistance arm. By reasonably setting the length ratio, the output force of the driving component 3 can be amplified several times, enabling the device to cut high-strength steel riveted fasteners with a small volume and low driving power. The device is highly portable and applicable to a wide range of scenarios.

[0057] Example 6 This embodiment, based on embodiment 5, explains the structure and function of the first limiting member.

[0058] In this embodiment, the power arm is provided with a first limiting member 19, and the first limiting member 19 is provided with a limiting groove. The limiting groove is used to limit the extent to which the power arms of the first lever arm 8 and the second lever arm 9 move away from each other.

[0059] As described above, the first limiting member 19 can be a stop block, a limiting pin, a limiting plate, a U-shaped limiting block, or an elastic buffer block, etc. In this embodiment, the first limiting member 19 is an example of a limiting block that spans the power arm section of the first lever arm member 8 and the second lever arm member 9 and has a limiting groove.

[0060] In this embodiment, the first limiting member 19 spans the power arm sections of the first lever arm 8 and the second lever arm 9, and the limiting groove penetrates the first lever arm 8 and the second lever arm 9. When the first lever arm 8 and the second lever arm 9 open, the power arm ends move away from each other, and the end faces of the first lever arm 8 and the second lever arm 9 move along the limiting groove until they abut against the side wall of the limiting groove. At this time, the first lever arm 8 and the second lever arm 9 stop swinging, and the opening angle of the first cutter head 6 and the second cutter head 7 reaches its maximum value. The first limiting member 19 prevents the first lever arm 8 and the second lever arm 9 from opening excessively, causing the opening of the first cutter head 6 and the second cutter head 7 to exceed the design range. At the same time, it avoids damage to internal components caused by overtravel output of the drive assembly 3, thereby improving the reliability and service life of the device.

[0061] Example 7 This embodiment, based on embodiment 3, explains the structure and function of the second limiting member.

[0062] In this embodiment, a second limiting member 20 is provided between the first connecting member 13 and the second connecting member 14. The second limiting member 20 is used to abut against the first connecting member 13 and the second connecting member 14 respectively to limit the sliding range of the first connecting member 13 and the second connecting member 14.

[0063] As described above, the second limiting member 20 can be a buffer pad, a limiting post, a stop pin, an elastic block, or a rigid partition, etc. In this embodiment, the second limiting member 20 is exemplified as a rigid limiting block disposed between the first connecting member 13 and the second connecting member 14.

[0064] In this embodiment, the second limiting member 20 is disposed in the middle of the path of the first connecting member 13 and the second connecting member 14 moving towards each other. When the first driver 11 and the second driver 12 respectively push the first connecting member 13 and the second connecting member 14 to slide towards each other, the opposite end faces of the first connecting member 13 and the second connecting member 14 gradually approach the second limiting member 20. When the first connecting member 13 and the second connecting member 14 respectively abut against the two end faces of the second limiting member 20, the first connecting member 13 and the second connecting member 14 stop moving forward, and the first cutting head 6 and the second cutting head 7 close to the minimum gap. The second limiting member 20 limits the maximum sliding stroke of the connecting members, preventing the first cutting head 6 and the second cutting head 7 from being over-closed and causing the cutting edges of the first cutting head 6 and the second cutting head 7 to break, while ensuring that the movement of the first connecting member 13 and the second connecting member 14 is symmetrical, so that the centering accuracy of the first cutting head 6 and the second cutting head 7 is higher when they close.

[0065] Example 8 This embodiment, based on Embodiment 1, describes the hexagonal protective plate structure for disassembling the main body.

[0066] In this embodiment, the disassembly body 1 includes an upper cover plate 21, a lower cover plate 22, a first protective plate 23, a second protective plate 24, a third protective plate 25, and a fourth protective plate 26. The upper cover plate 21 is disposed above the lower cover plate 22, and the first protective plate 23, the second protective plate 24, the third protective plate 25, and the fourth protective plate 26 are respectively connected between the upper cover plate 21 and the lower cover plate 22. The gap between the first protective plate 23 and the second protective plate 24 is a shearing position 27.

[0067] As described above, the disassembly body 1 can be a metal shell, a plastic shell, a frame structure, a cast shell, or a welded box, etc. In this embodiment, the disassembly body 1 is an example of an approximately rhomboid hexagonal shell formed by splicing together an upper cover plate 21, a lower cover plate 22, a first protective plate 23, a second protective plate 24, a third protective plate 25, and a fourth protective plate 26.

[0068] In this embodiment, the first guard plate 23, the second guard plate 24, the third guard plate 25, and the fourth guard plate 26 are joined with the upper cover plate 21 and the lower cover plate 22 to form an approximately rhomboid hexagonal shell, creating a closed internal space. The guard plates are made of stamped metal sheets, resulting in high overall rigidity after assembly, capable of withstanding shear reaction forces without deformation. The gap between the first guard plate 23 and the second guard plate 24 forms a shearing position 27, through which the shearing head assembly 2 extends to perform shearing operations. The multi-guard plate assembly structure facilitates the assembly and subsequent maintenance of the internal drive assembly 3 and the lever transmission mechanism 4, and the shell has a compact shape and a good grip.

[0069] Example 9 This embodiment, based on embodiment 8, describes the structure of the control switch and handle.

[0070] In this embodiment, the control component 5 includes a control switch 28, which is electrically connected to the control component 5. The control switch 28 is provided with a trigger 29, which is exposed on the upper cover plate 21. The upper cover plate 21 is provided with a handle 30.

[0071] As described above, the control switch 28 can be a push-button switch, rocker switch, micro switch, proximity switch, or touch switch, etc.; the handle 30 can be an integrated handle, a separate handle, a rubber-coated handle, or a folding handle, etc. In this embodiment, the control switch 28 is a micro switch in the form of a trigger 29, and the handle 30 is an integrated handle with a cover plate 21 installed.

[0072] In this embodiment, the handle 30 is integrally formed on the upper surface of the upper cover plate 21, conforming to an ergonomic grip shape. The trigger 29 is located below the handle 30. When the operator holds the handle 30, their index finger can naturally rest on the trigger 29. Pressing the trigger 29 initiates the cutting action, and releasing it stops the cutting action. All operations can be completed with one hand, making it convenient to use. The control switch 28 uses an electrical signal to control the start and stop of the drive component 3, providing fast response and high operational precision, suitable for high-frequency rework and dismantling operations.

[0073] Example 10 This embodiment describes the structure of the mounting base and the venting groove, based on embodiment 8 or embodiment 9.

[0074] In this embodiment, a mounting base 31 is provided between the second protective plate 24 and the third protective plate 25, and between the first protective plate 23 and the fourth protective plate 26, and the driving assembly 3 is fixed to the mounting base 31. The upper cover plate 21, the lower cover plate 22, the first protective plate 23, the second protective plate 24, the third protective plate 25, and the fourth protective plate 26 are all provided with ventilation grooves 32.

[0075] As described above, the mounting base 31 can be a bracket, a fixing plate, an L-shaped support, a shock-absorbing base, or an integrally formed boss, etc.; the ventilation groove 32 can be a long hole, a round hole, a square hole, a mesh hole, or a louver hole, etc. In this embodiment, the mounting base 31 is an example of a fixing plate set at the junction of the protective plate, and the ventilation groove 32 is an example of a long through hole.

[0076] In this embodiment, mounting bases 31 are respectively disposed at the junction of two sets of adjacent protective plates, forming two diagonally arranged mounting positions. The first driver 11 and the second driver 12 are respectively fixed on the two mounting bases 31, with the driver output ends facing the shear position 27. The diagonal arrangement makes high utilization of the internal space of the housing and the overall structure compact. The venting grooves 32 opened on each cover plate and protective plate are elongated through holes, connecting the internal and external spaces of the housing. For pneumatically driven schemes, the venting grooves 32 can promptly discharge residual air in the housing, ensuring smooth driving action. The venting grooves 32 also promote air convection, help dissipate heat from internal components, and extend continuous operation time.

[0077] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A novel device for disassembling and riveting fasteners, characterized in that, include: The main body (1) is disassembled, and an internal accommodating space is provided. One end of the accommodating space is provided with a shearing position (27). A shearing head assembly (2) is disposed at the shearing position (27) for shearing and disassembling riveted fasteners; The drive assembly (3) is fixed to the disassembly body (1) and is used to output drive power; A lever transmission mechanism (4) is disposed between the drive assembly (3) and the shearing head assembly (2). The lever transmission mechanism (4) is used to convert the power of the drive assembly (3) into the shearing force of the shearing head assembly (2). The lever transmission mechanism (4) includes a connecting block, a lever arm, and a rotating shaft (10). The connecting block is connected to the output end of the drive assembly (3). One end of the lever arm is connected to the connecting block, and the other end of the lever arm is connected to the shearing head assembly (2). The rotating shaft (10) passes through the middle of the lever arm and is rotatably connected to the shearing position (27). The control component (5) is electrically connected to the drive component (3) and is used to control the start and stop of the drive component (3).

2. The novel device for disassembling and riveting fasteners according to claim 1, characterized in that, The lever arm includes a first lever arm (8) and a second lever arm (9). The first lever arm (8) is disposed above the second lever arm (9). The end of the rotating shaft (10) away from the shearing position (27) is fixed to the first lever arm (8) and passes through the second lever arm (9). The shearing head assembly (2) includes a first cutter head (6) and a second cutter head (7), wherein the first cutter head (6) is disposed on the first lever arm (8) and the second cutter head (7) is disposed on the second lever arm (9).

3. A novel device for disassembling and riveting fasteners according to claim 2, characterized in that, The connecting block includes a first connector (13) and a second connector (14), and the driving assembly (3) includes a first driver (11) and a second driver (12). The first driver (11) is connected to the first connector (13), and the first connector (13) is provided with a first sliding groove (15). The first sliding groove (15) is slidably connected to one end of the first lever arm (8) away from the rotating shaft (10). The second driver (12) is connected to the second connector (14), the second connector (14) is provided with a second sliding groove (16), and the second sliding groove (16) is slidably connected to one end of the second lever (9) away from the rotating shaft (10).

4. A novel device for disassembling and riveting fasteners according to claim 3, characterized in that, The first sliding groove (15) is provided with a first connecting groove at one end of the first lever arm (8) that is slidably connected to the rotating shaft (10). A first sliding rod (17) is provided in the first connecting groove, and the first sliding rod (17) is slidably connected to the first sliding groove (15). The second sliding groove (16) is provided with a second connecting groove at one end of the second lever arm (9) that is slidably connected to the rotating shaft (10). A second sliding rod (18) is provided in the second connecting groove, and the second sliding rod (18) is slidably connected to the second sliding groove (16).

5. A novel device for disassembling and riveting fasteners according to claim 3, characterized in that, Both the first lever arm (8) and the second lever arm (9) form a lever structure with the rotation axis (10) as the fulcrum. The side of the first lever arm (8) near the first connecting member (13) and the side of the second lever arm (9) near the second connecting member (14) are both power arms. The side of the first lever arm (8) closest to the first cutter head (6) is a resistance arm, and the side of the second lever arm (9) closest to the second cutter head (7) is also a resistance arm; The length of the power arm is greater than the length of the resistance arm.

6. A novel device for disassembling and riveting fasteners according to claim 5, characterized in that, The power arm is provided with a first limiting member (19), and the first limiting member (19) is provided with a limiting groove. The limiting groove is used to limit the extent to which the power arms of the first lever arm (8) and the second lever arm (9) move away from each other.

7. A novel device for disassembling and riveting fasteners according to claim 3, characterized in that, A second limiting member (20) is provided between the first connector (13) and the second connector (14). The second limiting member (20) is used to abut against the first connector (13) and the second connector (14) respectively to limit the sliding range of the first connector (13) and the second connector (14).

8. A novel device for disassembling and riveting fasteners according to claim 1, characterized in that, The disassembly body (1) includes an upper cover plate (21), a lower cover plate (22), a first guard plate (23), a second guard plate (24), a third guard plate (25), and a fourth guard plate (26). The upper cover plate (21) is disposed above the lower cover plate (22). The first guard plate (23), the second guard plate, the third guard plate (25), and the fourth guard plate (26) are respectively connected between the upper cover plate (21) and the lower cover plate (22). The gap between the first guard plate (23) and the second guard plate (24) is the shearing position (27).

9. A novel device for disassembling and riveting fasteners according to claim 8, characterized in that, The control component (5) includes a control switch (28) electrically connected to the control component (5); the control switch (28) is provided with a trigger (29) exposed on the upper cover plate (21); The upper cover plate (21) is provided with a handle (30).

10. A novel device for disassembling riveted fasteners according to claim 8 or 9, characterized in that, A mounting base (31) is provided between the second guard plate (24) and the third guard plate (25), and between the first guard plate (23) and the fourth guard plate (26), and the driving assembly (3) is fixed to the mounting base (31); The upper cover plate (21), the lower cover plate (22), the first guard plate (23), the second guard plate (24), the third guard plate (25), and the fourth guard plate (26) are all provided with ventilation grooves (32).

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