Synchronous pressing linkage mechanism
By designing a synchronous clamping linkage mechanism, the hydraulic cylinder drives the rocker arm to rotate, which in turn drives the transmission linkage and the clamping arm to move synchronously, thus solving the problem of synchronous workpiece clamping and achieving stable workpiece clamping and efficient processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山东时风(集团)有限责任公司
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-28
AI Technical Summary
In machining and welding processes, existing technologies make it difficult to achieve synchronous clamping of workpieces, resulting in clamping deformation and inconsistency on both sides, which affects workpiece quality and machining accuracy.
A synchronous clamping linkage mechanism was designed, including a worktable, a clamping unit and a linkage mechanism. The rocker arm is driven by a hydraulic cylinder to drive the transmission linkage and the clamping arm to move synchronously, so as to realize the synchronous clamping and loosening of the workpiece.
It achieves synchronous clamping of workpieces, avoids clamping deformation, ensures consistency on both sides, improves processing quality and efficiency, and is suitable for mechanical, welding and automated production lines.
Smart Images
Figure CN224169613U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a synchronous pressing linkage mechanism, which is a mechanism for synchronously pressing workpieces. Background Technology
[0002] Currently, in the machining and welding industries, many workpieces require fixation during processing. In vehicle manufacturing plants, during the welding of chassis, body, or assemblies or subassemblies with multiple accessories, multiple manual, hydraulic, or pneumatic fixtures are often added around the tooling to fix the workpiece in order to suppress welding deformation and ensure welding accuracy. However, due to the multiple manual or pneumatic / hydraulic methods, it is difficult for both sides to synchronize, which can easily cause workpiece clamping deformation and fail to guarantee consistency on both sides. This can cause many drawbacks, especially for precision welding, affecting the quality of the workpiece and creating unnecessary defects in the assembly of large assemblies.
[0003] To solve the above problems, a synchronous pressing linkage mechanism was invented. Utility Model Content
[0004] To address the aforementioned deficiencies in the existing technology, this utility model provides a synchronous clamping linkage mechanism that is simple in structure, quick and convenient to clamp, and capable of synchronously clamping workpieces.
[0005] This utility model is achieved through the following technical solution: a synchronous pressing linkage mechanism, characterized in that it includes a worktable, two pressing units, and a linkage mechanism. Each pressing unit includes a pressing arm and a transmission connecting rod. The pressing arm is rotatably connected to the side of the worktable via a pressing arm pivot. One end of the pressing arm has a hook-shaped structure, and the other end of the pressing arm is hinged to one end of the transmission connecting rod. The pressing arms of the two pressing units are symmetrically arranged. The linkage mechanism includes a rotating rocker arm and a hydraulic cylinder. The rotating rocker arm is rotatably connected to the worktable via a pin. The hydraulic cylinder rod and the other ends of the two transmission connecting rods are all hinged to the rotating rocker arm, and the three hinge points are arranged in a triangle. A pressing fastener that can cooperate with the hook-shaped structure at the end of the two pressing arms is fixed on the upper part of the worktable.
[0006] In operation, the workpiece is placed on the workbench platform. When the hydraulic cylinder rod extends or retracts, it drives the rocker arm to rotate. This rocker arm, in turn, drives two connected transmission rods to move synchronously, which in turn drives two clamping arms to rotate synchronously. When the two clamping arms rotate downwards to a horizontal position, they engage with the clamping fasteners on the upper part of the workbench platform to clamp the workpiece onto the platform. When the two clamping arms open upwards synchronously, the workpiece can be released or placed onto the workbench platform. This allows for the clamping and unclamping of the workpiece.
[0007] Furthermore, the clamping fastener includes two channel steel blocks with opposite slots, the bottoms of the two channel steel blocks are fixedly connected as one unit by a connecting plate, and the upper flanges of the two channel steel blocks respectively cooperate with the hook-shaped structures at the ends of the two clamping arms.
[0008] The beneficial effects of this invention are as follows: This invention enables synchronized clamping of two clamping units, ensuring synchronous clamping without off-center loading, guaranteeing proper workpiece positioning, minimizing workpiece deformation, ensuring consistency on both sides, effectively suppressing workpiece deformation during welding or machining, and improving workpiece processing quality. This invention has a compact structure, facilitating convenient and quick workpiece clamping, and improving processing efficiency. This invention can be widely applied in the machinery, welding, and automated production line industries, achieving synchronized clamping of workpieces and possessing high practicality. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the clamping state of this utility model;
[0011] In the diagram, 1. Transmission linkage I, 2. Clamping arm shaft, 3. Clamping arm I, 4. Connecting plate, 5. Channel steel block, 6. Workbench platform, 7. Clamping arm II, 8. Transmission linkage II, 9. Workbench base plate, 10. Rotating rocker arm, 11. Pin shaft, 12. Joint shaft, 13. Hydraulic cylinder joint, 14. Hydraulic cylinder rod, 15. Hydraulic cylinder, 16. Hydraulic cylinder connecting seat, 17. Hydraulic cylinder connecting shaft. Detailed Implementation
[0012] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:
[0013] As shown in the attached diagram, a synchronous clamping linkage mechanism includes a worktable 18, two clamping units, and a linkage mechanism. The first clamping unit includes a clamping arm I3 and a transmission connecting rod I1. The clamping arm I3 is rotatably connected to the side of the worktable platform 6 via a clamping arm pivot 2. One end of the clamping arm I3 has a hook-like structure, and the other end is hinged to one end of the transmission connecting rod I1. The second clamping unit includes a clamping arm II7 and a transmission connecting rod II8. The clamping arm II7 is also rotatably connected to the side of the worktable platform 6 via a clamping arm pivot. One end of the clamping arm II7 also has a hook-like structure, and the other end is hinged to one end of the transmission connecting rod II8. The clamping arms I3 and II7 are symmetrically arranged and connected to opposite sides of the worktable platform 6. The linkage mechanism includes a rotating rocker arm 10 and a hydraulic cylinder 15. The rotating rocker arm 10 is rotatably connected to the worktable 18 via a pin 11. The hydraulic cylinder 15 is hinged to a hydraulic cylinder connecting seat 16 fixed on the base plate 9 of the worktable via a hydraulic cylinder connecting shaft 17. The front end of the hydraulic cylinder rod 14 of the hydraulic cylinder 15 is connected to a hydraulic cylinder connector 13, which is hinged to the rotating rocker arm 10 via a connector rotating shaft 12. The other ends of the transmission connecting rod I1 and the transmission connecting rod II8 are also hinged to the rotating rocker arm 10. The three hinge points—the hinge point between the hydraulic cylinder rod 14 of the hydraulic cylinder 15 and the rotating rocker arm 10, the hinge point between the transmission connecting rod I1 and the rotating rocker arm 10, and the hinge point between the transmission connecting rod II8 and the rotating rocker arm 10—are arranged in a triangle. A clamping fastener that can cooperate with the hook-shaped structure at the end of the two clamping arms is fixed on the upper part of the platform 6 of the worktable. In this embodiment, the clamping fastener adopts the following structure: it includes two channel steel blocks 5 with opposite slots, the bottoms of the two channel steel blocks 5 are fixedly connected as one piece by a connecting plate 4, and the upper flanges of the two channel steel blocks 5 can respectively cooperate with the hook-shaped structures at the ends of the two clamping arms.
[0014] In operation, the workpiece is placed on platform 6 of the workbench. When the cylinder rod 14 of the hydraulic cylinder 15 extends or retracts, it drives the rocker arm 10 to rotate. This rotation of the rocker arm 10 causes the connected transmission rods I1 and II8 to move synchronously, which in turn drives the clamping arms I3 and II7 to rotate synchronously. When the clamping arms I3 and II7 rotate synchronously downwards to a horizontal position under the action of the linkage mechanism, the hook-like structure at the end of the clamping arms engages with the channel steel block 5 on the upper part of the platform 6 of the workbench, clamping the workpiece onto the platform 6. When the clamping arms I3 and II7 open synchronously upwards under the reverse action of the linkage mechanism, the workpiece is released. When the clamping arms I3 and II7 are open simultaneously, the workpiece is placed on the platform of the workbench, and the linkage mechanism then drives the clamping arms I3 and II7 to clamp the workpiece. This cycle allows for the clamping and unclamping of the workpiece.
[0015] This invention can be widely applied in the machinery industry, welding industry, or automated production line industry, etc. For example:
[0016] 1. PEM Electrolyzer Production: During the airtightness test of the PEM electrolyzer prototype, its upper and lower end plates need to be tightly pressed. The synchronous pressing linkage mechanism of this utility model can be used to apply axial pressing force to the electrolyzer, ensuring that the electrolyzer is pressed tightly throughout the test.
[0017] 2. Automotive Manufacturing Industry: In the assembly process of automotive parts, such as engine block assembly and body welding, this synchronous clamping linkage mechanism can be used to ensure the accurate installation and tight connection of parts. It ensures the positional accuracy and stability of workpieces during processing, guarantees processing quality, and improves production efficiency. For example, in the assembly of engine blocks, the synchronous clamping linkage mechanism synchronously clamps components such as the cylinder head and piston, ensuring the fitting accuracy between components, preventing leakage and other problems, and improving engine performance and reliability.
[0018] 3. Machining Industry: During the machining of mechanical parts, it is necessary to clamp and fix the workpiece to ensure machining accuracy and safety. For example, in machining equipment such as milling machines and drilling machines, using a synchronous clamping linkage mechanism to fix the workpiece can ensure that the workpiece will not shift during machining, thus improving machining quality.
[0019] The other parts in this embodiment are all existing technologies and will not be described in detail here.
Claims
1. A synchronous pressing linkage mechanism, characterized in that: The device includes a worktable, two clamping units, and a linkage mechanism. Each clamping unit includes a clamping arm and a transmission rod. The clamping arm is rotatably connected to the side of the worktable via a clamping arm pivot. One end of the clamping arm has a hook-like structure, and the other end of the clamping arm is hinged to one end of the transmission rod. The clamping arms of the two clamping units are symmetrically arranged. The linkage mechanism includes a rotating rocker arm and a hydraulic cylinder. The rotating rocker arm is rotatably connected to the worktable via a pin. The hydraulic cylinder rod and the other ends of the two transmission rods are all hinged to the rotating rocker arm, and the three hinge points are arranged in a triangle. A clamping fastener that can cooperate with the hook-like structure at the end of the two clamping arms is fixed on the upper part of the worktable.
2. The synchronous pressing linkage mechanism according to claim 1, characterized in that: The clamping fastener includes two channel steel blocks with opposite slots. The bottoms of the two channel steel blocks are fixedly connected as one unit by a connecting plate. The upper flanges of the two channel steel blocks respectively cooperate with the hook-shaped structures at the ends of the two clamping arms.