Application of the Air Bottle Neck Ring Riveting Machine
Air Bottle Neck Ring Riveting Machine: A Key Specialized Equipment for Gas Cylinder Manufacturing and Inspection
In the production and regular inspection processes of high-pressure containers such as seamless gas cylinders, welded gas cylinders, fire-fighting gas cylinders, and vehicle-mounted natural gas gas cylinders, the neck ring is a key structural component that is responsible for lifting, handling, positioning, and protecting the bottle mouth. The connection strength, coaxiality, and tightening reliability of the neck ring and the bottle body directly affect the safety of the gas cylinder during transportation, use, and inspection. Traditional manual hammering and simple press-fitting methods have defects such as uneven force distribution, large positioning deviation, insufficient tightening, and easy damage to the bottle body, which cannot meet the requirements of standardized and large-scale production of special equipment. The air bottle neck ring riveting machine, as a specialized cold forming equipment developed specifically for the assembly of bottle mouth neck rings, has core advantages such as precise pressure application, stable positioning, and automated operation, and has become an indispensable key equipment in the gas cylinder manufacturing line and inspection line.
I. Working Principle of the Air Bottle Neck Ring Riveting Machine
The air bottle neck ring riveting machine adopts the cold rolling riveting / radial spin riveting principle. It uses hydraulic power as the driving source and uses the rivet head to apply controlled pressure and spin-form the joint part of the neck ring and the bottle shoulder, causing the neck ring material to undergo plastic deformation and forming a tight, solid, and non-loose integrated connection with the bottle body neck.
During operation, the gas cylinder is precisely centered and stabilized by the supporting wheels and positioning mechanism, and the rivet head rotates uniformly along the circumference of the bottle mouth. The riveting is completed in three stages: "pre-pressing - main riveting forming - holding pressure and shaping". The entire process is cold processing, without generating thermal stress, without damaging the base material of the bottle body, and without affecting the accuracy of the bottle mouth thread. The formed neck ring is not loose, not skewed, and does not fall off, meeting the long-term safety requirements of pressure-bearing equipment.
II. Core Components of the Air Bottle Neck Ring Riveting Machine
The equipment adopts a horizontal / vertical dedicated structure, suitable for the small space of the bottle mouth and the high-precision assembly requirements. It is mainly composed of five systems:
Bottle body positioning and self-rotation system
It uses adjustable rollers, centering by top pressure or V-shaped positioning mechanism, compatible with different diameters and lengths of gas cylinders, ensuring that the center of the bottle body and the center of the rivet head are coincident; variable frequency drive realizes smooth and low-speed self-rotation, ensuring uniform and consistent circumferential riveting.
Riveting power and execution system
It uses pneumatic or servo hydraulic as the power source, with stable and adjustable output pressure; the rivet head is made of high wear-resistant alloy material, precisely processed, and the forming surface and the contour of the neck ring are matched to ensure a beautiful and uniform formation without stress concentration.
Feed and guidance mechanism
The servo / pneumatic linear guide rail drives the rivet head to advance and retreat, with high positioning accuracy, smooth movement, avoiding impact and uneven loading, and can precisely control the riveting depth and pressure.
Hydraulic / pneumatic control system
It provides stable power and pressure protection, has functions of pressure regulation, pressure stabilization, and pressure holding, preventing overpressure damage to the bottle body; it is equipped with pressure sensors and overload protection to enhance operational safety.
PLC electrical control system
It supports manual / automatic switching, can preset pressure, speed, holding time, feed speed, etc.; it has functions such as counting, fault alarm, pressure monitoring, and data recording, simple operation, strong consistency, and can be connected to the automated production line.
III. Core Technical Advantages of the Air Bottle Neck Ring Riveting Machine
High connection strength, safe and reliable: Cold forming causes the neck ring and the bottle body to plastically bite together, with superior tensile, vibration, and loosening performance compared to manual pressing, eliminating the risk of detachment or displacement during use.
High forming accuracy, good coaxiality: The dedicated positioning and synchronous self-rotation design ensures that the neck ring is concentric with the bottle mouth, without skewing or wearing the thread, meeting the requirements for subsequent valve assembly.
No thermal damage, protecting the bottle body: The cold riveting process does not generate high temperature, no annealing, no deformation, and no internal stress, without affecting the strength of the gas cylinder material and the quality of the anti-corrosion layer.
High efficiency, strong consistency: Each bottle riveting only takes a few seconds to tens of seconds, suitable for batch production and regular inspection; parameters are fixed, and product quality is not affected by human skills. Green and environmentally friendly, with simple operation: no smoke, no noise, no consumables, low energy consumption; fewer wear parts, reliable structure, suitable for continuous production in workshops.
IV. Typical application scenarios of the gas neck ring riveting machine
New bottle manufacturing: rapid riveting of the neck ring after welding / sealing, providing standard assembly interfaces for painting, inspection, and packaging.
Regular inspection of in-use gas cylinders: replacement of old neck rings, re-riveting of loose neck rings to restore safety performance.
Fire-fighting gas cylinders, industrial gas cylinders, CNG/LNG gas cylinders: mandatory assembly procedures for high safety-level gas cylinders.
V. Selection and usage tips for the gas neck ring riveting machine
Applicable bottle types: select the model and rivet head specifications based on the diameter of the gas cylinder, the size of the neck ring, and the bottle mouth form.
Power type: choose pneumatic type for small batches; choose air-hydraulic boost or hydraulic type for large batches and thick-neck rings.
Process parameters: adjust the pressure and holding time according to the material and wall thickness to avoid over-riveting and cracking or loose riveting.
Daily maintenance: regularly lubricate the guide rails, inspect the seals, calibrate the pressure, and clean the positioning surfaces to ensure long-term stability. Conclusion
The gas cylinder ring riveting machine, with its features of high precision, high reliability, high efficiency and green safety, has completely replaced the traditional manual assembly method and has become the standard equipment for the gas cylinder industry to improve quality, ensure safety and increase production capacity. With the continuous upgrading of safety standards for special equipment, specialized riveting equipment with automation, intelligence and dataization will be further popularized, providing stable and reliable process support for the safe operation of the gas cylinder throughout its life cycle.