A heat-seal clamping and pressing execution structure

Abstract

This utility model discloses a heat-sealing clamping and pressing execution structure, relating to the field of vacuum heat-sealing equipment technology. It includes a pressing unit and a clamping plate execution structure. The pressing unit includes a pressing adapter plate, a pressing guide column, a pressing base, a pressing guide shaft fixing plate, a pressing reinforcing rib, a pressing bellows, and a pressing torque motor module. The clamping plate execution structure includes a clamping base plate, a clamping reinforcing rib, a clamping linear bearing, a clamping fixing plate, a clamping guide shaft, a clamping base, a clamping bellows, and a cylinder. The cylinder is hinged to a lifting base via a rotating shaft. The lifting base is hinged to a proportional transmission block, with its two ends hinged to the lifting rod and lowering rod of a lifting rod assembly, respectively. The lifting rod assembly is evenly connected to the upper clamping plate assembly and the lower clamping plate assembly, enabling the cylinder to control the lifting rod assembly to achieve synchronous pressing. The lower clamping plate assembly is equipped with a heat-sealing structure. This utility model solves the technical problems of insufficient synchronization accuracy and insufficient process consistency in existing structures.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heat sealing equipment technology, specifically to a heat sealing clamping and pressing execution structure. Background Technology

[0002] In multi-station machining equipment, the synchronization accuracy of the clamping mechanism directly determines the machining quality. Traditional hydraulic clamping systems, while providing significant clamping force, suffer from inherent drawbacks such as slow response (typically 2-3 seconds), high energy consumption, and susceptibility to oil leaks. Pneumatic clamping solutions, while faster, exhibit poor clamping force stability, significantly affected by fluctuations in air pressure. Existing synchronization controls often employ mechanical linkages or synchronous gearboxes, which are bulky and suffer from backlash accumulation, leading to clamping force deviations of 15%-20% between different stations. More advanced servo-electric clamping systems offer higher precision but are expensive and have complex control systems requiring specialized motion control cards and programming. In continuous production environments, these structures require high maintenance standards, and their mean time between failures (MTBF) often falls short of Industry 4.0 production demands. Particularly in mass production sectors such as automotive parts, dimensional deviations caused by clamping asynchrony have become a major challenge for quality control. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a heat-sealing clamping and pressing execution structure to solve the technical problems of insufficient synchronization accuracy and insufficient process consistency of existing structures.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] A heat-sealing clamping and pressing actuating structure includes a pressing unit and a clamping plate actuating structure. The pressing unit includes a pressing adapter plate, a pressing guide column, a pressing base, a pressing guide shaft fixing plate, a pressing reinforcing rib, a pressing bellows, and a pressing torque motor module. The clamping plate actuating structure includes a clamping base plate, a clamping reinforcing rib, a clamping linear bearing, a clamping fixing plate, a clamping guide shaft, a clamping base, a clamping bellows, and a cylinder. The cylinder is hinged to a lifting base via a rotating shaft. The lifting base is hinged to a proportional transmission block. The two ends of the proportional transmission block are respectively hinged to the lifting rod and lowering rod of a lifting rod assembly. The lifting rod assembly is evenly connected to the upper clamping plate assembly and the lower clamping plate assembly, so that the cylinder controls the lifting rod assembly to achieve synchronous pressing. The lower clamping plate assembly is provided with a heat-sealing structure.

[0006] By separating the pressing function from the clamping action through modular design, the pressing unit is responsible for providing adaptive pressing force, while the clamping plate execution structure is responsible for achieving synchronous movement of the upper and lower clamping plate components, thereby solving the problems of low synchronization accuracy and poor force consistency in traditional systems. This separated structure avoids force interference, improves the stability and process consistency of the heat sealing process, and is particularly suitable for multi-station vacuum heat sealing equipment.

[0007] Optionally, the clamping guide post passes through the clamping guide shaft fixing plate and is fixedly connected to the clamping base, and the clamping reinforcing rib is provided on the side of the clamping base to enhance rigidity.

[0008] A high-rigidity guiding system is formed by clamping guide columns, clamping guide shaft fixing plates, and clamping reinforcing ribs, ensuring the linearity and stability of the clamping action, reducing accuracy loss caused by off-center load or vibration, and thus improving the efficiency of clamping force transmission.

[0009] Optionally, the clamping linear bearing is embedded in the clamping fixing plate to guide the clamping guide shaft. One end of the clamping guide shaft is fixed to the clamping base plate, and the other end is connected to the clamping base.

[0010] The clamping action is guided by a low-friction, high-precision clamping mechanism using a clamping linear bearing, a clamping fixing plate, and a clamping guide shaft. This reduces motion resistance, extends service life, and ensures that the clamping base moves smoothly under the drive of a cylinder.

[0011] Optionally, the compression corrugated tube is sleeved outside the compression guide post for dust prevention and protection; the clamping corrugated tube is sleeved outside the clamping guide shaft.

[0012] The bellows protects the clamping guide column from dust contamination, and the clamping bellows seals the clamping guide shaft, preventing impurities from entering the vacuum heat-sealing environment and improving the reliability of the equipment under harsh working conditions.

[0013] Optionally, the clamping torque motor module includes a torque motor and a transmission mechanism, which is connected to the clamping plate via a clamping adapter plate and is used to drive the clamping transmission rod.

[0014] It provides adaptive clamping force, which adjusts the output force in real time according to the sample thickness through a torque motor and transmission mechanism, overcoming the pressure fluctuation problem of pneumatic or hydraulic systems and ensuring consistent clamping force for samples of different thicknesses.

[0015] Alternatively, the proportional transmission block is a lever structure, with its middle part hinged to the lifting base via a rotating shaft, and its two ends hinged to the lifting rod and lowering rod of the lifting rod assembly, respectively, to form a proportional transmission mechanism.

[0016] The unidirectional force of the cylinder is proportionally distributed to the lifting rod assembly, realizing the synchronous reverse movement of the upper and lower clamping plate assemblies, simplifying the transmission chain, eliminating the backlash problem of traditional gearboxes, and improving synchronization accuracy.

[0017] Optionally, the lifting rod assembly includes multiple parallel rods, each rod being evenly connected to a corresponding position of the upper clamping plate assembly or the lower clamping plate assembly.

[0018] The output force of the proportional transmission block is evenly transmitted to the upper and lower clamping plate assemblies. The load is distributed by the parallel layout of multiple rods, avoiding stress concentration at a single point, ensuring uniform clamping force distribution, and improving heat sealing quality.

[0019] Optionally, the upper clamping plate assembly and the lower clamping plate assembly are connected to the lifting rod assembly via upper clamping plate adapter blocks and lower clamping plate adapter blocks respectively, and the heat-sealing structure is integrated inside the lower clamping plate assembly.

[0020] The flexible connection between the clamping plate and the lifting rod assembly is achieved through the adapter block, allowing for fine-tuning of the alignment. At the same time, the lower clamping plate assembly integrates a heat-sealing structure, directly completing the heating and sealing operations and simplifying the process.

[0021] Optionally, a layer-extraction plate is also included, located below the lower clamping plate assembly, to assist in sample positioning and vacuuming.

[0022] It assists in sample positioning and vacuum extraction, optimizes the heat sealing environment by forming a sealed cavity, improves vacuum stability, and reduces bubbles or sealing defects, making it particularly suitable for precision machining of automotive parts and other components.

[0023] Alternatively, the clamping unit and the clamping plate execution structure are both mounted on the equipment frame via a clamping base plate and a clamping base, forming a modular design.

[0024] Improve equipment maintainability and adaptability by using clamping base plates and pressing bases to enable quick installation or replacement, reduce downtime, and meet the needs of continuous industrial production.

[0025] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0026] By using a single actuator and proportional transmission block design, synchronous clamping of the upper and lower clamping plate assemblies is achieved, with clamping force deviation of less than 5%, which significantly improves heat sealing stability.

[0027] The clamping torque motor module ensures that the clamping force adapts to changes in sample thickness, avoiding the pressure fluctuation problems of traditional pneumatic or hydraulic systems.

[0028] The modular structure simplifies maintenance and increases the mean time between failures (MTBF) to over 10,000 hours, making it suitable for continuous industrial production environments. Attached Figure Description

[0029] Figure 1A schematic diagram of the top integral structure of a heat-sealing clamping and pressing actuator structure proposed for an embodiment of this utility model;

[0030] Figure 2 A schematic diagram of a heat-sealing clamping and pressing actuation structure for removing clamping torque motor module, as proposed in an embodiment of this utility model;

[0031] Figure 3 A schematic diagram of the overall structure of the upper and lower clamping plate assemblies of a heat-sealing clamping and pressing execution structure proposed in an embodiment of this utility model;

[0032] Figure 4 A schematic diagram of a partial transmission structure of the upper and lower clamping plate assemblies of a heat-sealing clamping and pressing actuating structure proposed in an embodiment of this utility model;

[0033] Figure 5 A cross-sectional schematic diagram of a heat-sealing clamping and pressing actuating structure proposed for an embodiment of this utility model;

[0034] 1. Clamping base plate; 2. Clamping reinforcing rib; 3. Clamping linear bearing; 4. Clamping fixing plate; 5. Clamping guide shaft; 6. Clamping base; 7. Clamping bellows; 8. Cylinder; 9. Pressing adapter plate; 10. Pressing guide column; 11. Pressing base; 12. Pressing guide shaft fixing plate; 13. Pressing reinforcing rib; 14. Pressing bellows; 15. Pressing torque motor module; 16. Rotating shaft; 17. Lifting base; 18. Proportional transmission block; 19. Lower clamping plate adapter block; 20. Upper clamping plate adapter block; 21. Upper clamping plate assembly; 22. Lower clamping plate assembly; 23. Lifting rod assembly; 24. Pressing transmission rod; 25. Pressing plate; 26. Sample; 27. Shelf plate. Detailed Implementation

[0035] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0036] Example 1

[0037] Combined with appendix Figure 1-5A heat-sealing clamping and pressing execution structure includes a pressing unit and a clamping plate execution structure. The pressing unit includes a pressing adapter plate 9, a pressing guide column 10, a pressing base 11, a pressing guide shaft fixing plate 12, a pressing reinforcing rib 13, a pressing bellows 14, and a pressing torque motor module 15. The clamping plate execution structure includes a clamping base plate 1, a clamping reinforcing rib 2, a clamping linear bearing 3, a clamping fixing plate 4, a clamping guide shaft 5, a clamping base 6, a clamping bellows 7, and a cylinder 8. The cylinder 8 is hinged to a lifting base 17 via a rotating shaft 16. The lifting base 17 is hinged to a proportional transmission block 18. The two ends of the proportional transmission block 18 are respectively hinged to the lifting rod and the lowering rod of the lifting rod assembly 23. The lifting rod assembly 23 is evenly connected to the upper clamping plate assembly 21 and the lower clamping plate assembly 22, so that the cylinder 8 controls the lifting rod assembly 23 to achieve synchronous pressing. The lower clamping plate assembly 22 is provided with a heat-sealing structure. The clamping unit outputs controllable torque through the clamping torque motor module 15, which is transmitted to the clamping plate 25 via the clamping transmission rod 24, applying constant pressure to the sample 26. The cylinder 8 of the clamping plate actuation structure drives the proportional transmission block 18 on the lifting base 17 through the rotating shaft 16. The proportional transmission block 18 converts the linear motion of the cylinder into the synchronous lifting of the lifting rod assembly 23, causing the upper clamping plate assembly 21 and the lower clamping plate assembly 22 to close. The clamping unit and the clamping plate actuation structure are not mechanically connected and operate independently during operation. The clamping unit ensures consistent force, while the clamping plate actuation structure ensures synchronous movement.

[0038] The clamping guide post 10 passes through the clamping guide shaft fixing plate 12 and is fixedly connected to the clamping base 11. The clamping reinforcing rib 13 is provided on the side of the clamping base 11 to enhance rigidity. The clamping guide post 10 passes through the clamping guide shaft fixing plate 12 and is fixed to the clamping base 11, forming a sliding pair; the clamping reinforcing rib 13 is welded to the side of the clamping base 11 to enhance bending rigidity. When the clamping torque motor module 15 is driven, the clamping guide post 10 moves linearly along the fixing plate, ensuring that the clamping plate 25 presses vertically against the sample 26, avoiding tilting or jamming.

[0039] A clamping linear bearing 3 is embedded in a clamping fixing plate 4 to guide the clamping guide shaft 5. One end of the clamping guide shaft 5 is fixed to the clamping base plate 1, and the other end is connected to the clamping base 6. When the cylinder 8 pushes the clamping base 6, the clamping guide shaft 5 slides within the linear bearing, reducing friction and backlash, and enabling precise alignment of the upper and lower clamping plate assemblies.

[0040] The clamping bellows 14 is fitted onto the outside of the clamping guide post 10 for dust prevention and protection; the clamping bellows 7 is fitted onto the outside of the clamping guide shaft 5. The clamping bellows 14, fitted onto the outside of the clamping guide post 10, folds / unfolds with the extension and retraction of the guide post, forming a dynamic seal; similarly, the clamping bellows 7 is fitted onto the clamping guide shaft 5, maintaining a sealed state when the cylinder is actuated, preventing grease leakage or foreign matter accumulation, and ensuring the long-term stable operation of the guiding system.

[0041] The clamping torque motor module 15 includes a torque motor and a transmission mechanism. It is connected to the clamping plate 25 via a clamping adapter plate 9 and is used to drive the clamping transmission rod 24. The clamping torque motor module 15 receives control signals and outputs precise torque, which drives the clamping transmission rod 24 and the clamping plate 25 via the clamping adapter plate 9. The torque motor has a built-in feedback system that automatically adjusts the current to maintain constant pressure when the sample thickness changes, achieving "soft contact" to avoid pressure loss.

[0042] Combined with appendix Figure 3-4 The proportional transmission block 18 is a lever structure, with its central part hinged to the lifting base 17 via a rotating shaft 16, and its two ends hinged to the lifting rod and lowering rod of the lifting rod assembly 23, respectively, forming a proportional transmission mechanism. When the cylinder 8 pushes one end of the proportional transmission block 18, the other end moves in the opposite direction, causing the lifting rod and lowering rod of the lifting rod assembly 23 to rise and fall synchronously. The lever proportional design ensures balanced force distribution with a deviation of less than 5%.

[0043] The lifting rod assembly 23 includes multiple parallel rods, each rod being evenly connected to a corresponding position of the upper clamping plate assembly 21 or the lower clamping plate assembly 22. The lifting rod assembly 23 is composed of multiple parallel rods, each rod being connected to the clamping plate assembly via the upper clamping plate adapter block 20 or the lower clamping plate adapter block 19; when the proportional transmission block 18 is activated, all rods move synchronously, causing the upper and lower clamping plate assemblies to close in parallel, ensuring that the sample 26 is fully compressed.

[0044] The upper clamping plate assembly 21 and the lower clamping plate assembly 22 are respectively connected to the lifting rod assembly 23 via the upper clamping plate adapter block 20 and the lower clamping plate adapter block 19. The heat sealing structure is integrated inside the lower clamping plate assembly 22. The upper clamping plate assembly 21 and the lower clamping plate assembly 22 are hinged to the lifting rod assembly 23 via the upper clamping plate adapter block 20 and the lower clamping plate adapter block 19, respectively. The heat sealing structure, such as a heating element, is embedded inside the lower clamping plate assembly 22. When clamped, it is electrically heated to achieve synchronous compression and heat sealing of the sample 26.

[0045] The embodiment also includes a layer-removing plate 27, which is disposed below the lower clamping plate assembly 22 to assist in the positioning of the sample 26 and vacuuming. The layer-removing plate 27 is disposed below the lower clamping plate assembly 22 and forms a sealed space with the clamping plate; before heat sealing, the vacuum system removes air through the layer-removing plate 27, so that the sample 26 is tightly attached to the heat sealing surface, ensuring uniform and flawless heat sealing.

[0046] Both the clamping unit and the clamping plate actuation structure are mounted on the equipment frame via the clamping base plate 1 and the clamping base 11, forming a modular design. The clamping unit and the clamping plate actuation structure are mounted on the equipment frame via standardized interfaces of the clamping base plate 1 and the clamping base 11, respectively. The independent modules allow for individual debugging or maintenance without disassembling the overall structure, thus shortening the maintenance cycle.

[0047] Working process: The sample 26 is placed on the extraction plate 27. The cylinder 8 is activated, driving the lifting rod assembly 23 through the rotating shaft 16 and the proportional transmission block 18, causing the upper clamping plate assembly 21 and the lower clamping plate assembly 22 to close synchronously. At the same time, the clamping torque motor module 15 adjusts the clamping force according to the sample thickness to ensure consistent clamping force. After heat sealing is completed, the cylinder 8 moves in the reverse direction, and the clamps open.

[0048] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A heat-sealing clamping and pressing actuating structure, characterized in that, The device includes a clamping unit and a clamping plate execution structure. The clamping unit includes a clamping adapter plate, a clamping guide column, a clamping base, a clamping guide shaft fixing plate, a clamping reinforcing rib, a clamping bellows, and a clamping torque motor module. The clamping plate execution structure includes a clamping base plate, a clamping reinforcing rib, a clamping linear bearing, a clamping fixing plate, a clamping guide shaft, a clamping base, a clamping bellows, and a cylinder. The cylinder is hinged to a lifting base via a rotating shaft. The lifting base is hinged to a proportional transmission block. The two ends of the proportional transmission block are respectively hinged to the lifting rod and lowering rod of the lifting rod assembly. The lifting rod assembly is evenly connected to the upper clamping plate assembly and the lower clamping plate assembly, so that the cylinder controls the lifting rod assembly to achieve synchronous clamping. The lower clamping plate assembly is provided with a heat-sealing structure.

2. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The clamping guide post passes through the clamping guide shaft fixing plate and is fixedly connected to the clamping base. The clamping reinforcing rib is set on the side of the clamping base to enhance rigidity.

3. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The clamping linear bearing is embedded in the clamping fixing plate and is used to guide the clamping guide shaft. One end of the clamping guide shaft is fixed to the clamping base plate, and the other end is connected to the clamping base.

4. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The compression corrugated tube is sleeved outside the compression guide post for dust prevention and protection; the clamping corrugated tube is sleeved outside the clamping guide shaft.

5. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The clamping torque motor module includes a torque motor and a transmission mechanism, which is connected to the clamping plate through a clamping adapter plate and is used to drive the clamping transmission rod.

6. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The proportional transmission block is a lever structure, with its middle part hinged to the lifting base via a rotating shaft, and its two ends hinged to the lifting rod and lowering rod of the lifting rod assembly, respectively, forming a proportional transmission mechanism.

7. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The lifting rod assembly includes multiple parallel rods, each rod being evenly connected to a corresponding position of the upper clamping plate assembly or the lower clamping plate assembly.

8. The heat-sealing clamping and pressing actuating structure according to claim 1, characterized in that, The upper clamping plate assembly and the lower clamping plate assembly are respectively connected to the lifting rod assembly via the upper clamping plate adapter block and the lower clamping plate adapter block, and the heat-sealing structure is integrated inside the lower clamping plate assembly.

9. The heat-sealing clamping and pressing actuating structure according to any one of claims 1 to 8, characterized in that, It also includes a sample extraction plate, located below the lower clamping plate assembly, for assisting in sample positioning and vacuuming.

10. The heat-sealing clamping and pressing actuating structure according to any one of claims 1 to 8, characterized in that, The clamping unit and the clamping plate execution structure are both mounted on the equipment frame via a clamping base plate and a clamping base, forming a modular design.

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