Automatic dowel riveting machine

Automatic riveting machine is specialized equipment used to perform riveting operations, pin riveting, and create permanent joints in industrial manufacturing processes. The machine is widely used in mechanical engineering, automotive and motorcycle parts manufacturing, electrical and electronic components, medical equipment, furniture, and consumer goods. The use of an automatic riveting system ensures stable control of riveting force, riveting position, and pin-head forming, thereby improving the consistency and quality of the joints. Depending on the product requirements, the machine can utilize various riveting methods such as Orbital riveting, Radial (Spiralform) riveting, or Rollerform riveting. The system can be integrated with jigs and fixtures, bowl feeders, transfer mechanisms, and multi-station rotary tables to automate the entire process of pin feeding, positioning, and riveting. In the following section, let’s explore in detail with CNC VINA the structure, technology, features, and applications of automatic riveting machines in industrial manufacturing.

Technical specifications of the automatic riveting machine

Key features of CNC VINA automatic riveting machines

CNC VINA automatic riveting machines utilize various riveting methods, depending on the product type, material, and technical requirements of the joint. The main riveting technologies include:

• Orbital riveting: The riveting head moves along an eccentric orbital path to form and press the pin head. This method provides stable riveting force, minimizes product deformation, and is suitable for high-precision components.
• Radial (Spiralform) riveting: The riveting head moves along a spiral trajectory, creating multiple contact points on the surface of the pin head. This method helps distribute the riveting force evenly, creates a strong joint, and minimizes the impact on the material surrounding the riveting area.
• Rollerform riveting: Rollers are used to progressively form the pin head. This method is suitable for applications requiring a smooth forming process and precise control of material deformation.

The above methods are developed based on Swiss riveting technology, helping meet requirements for joint strength, precision, and stability while also contributing to shorter processing times compared with manual riveting.

CNC VINA designs and manufactures automatic riveting machines according to the customer's actual requirements. The system can be configured to process various types of pins with different shapes, sizes, and materials. Depending on the product characteristics, the number of riveting positions, required production volume, and level of automation, the machine can be designed from a simple modular riveting machine to a fully automated riveting system.

1. Modular riveting machine – Suitable for simple products

For products with simple structures, a small number of riveting positions, and moderate production requirements, CNC VINA provides compact and lightweight modular riveting machines.

A basic riveting module may include:

• Riveting hammer/head.
• Riveting anvil.
• Product positioning fixture.
• Work area lighting system.
• Integrated machine control screen.
• Riveting cycle control system.

The compact and lightweight design makes the machine easy to move, install, and integrate directly into the production line.

For products requiring higher productivity, the machine can be integrated with automatic product feeding and rivet feeding systems, helping reduce manual operations and increase production speed.

2. Automatic riveting machine for complex, high-volume products

For products with multiple riveting positions or high production volume requirements, the machine is designed with automatic pin and product feeding systems.

The system can integrate:

• Automatic pin and rivet feeding system.
• Automatic bowl feeder to sort and deliver pins to the feeding position.
• Pin feeding mechanism to the riveting head.
• Multi-station rotary table or transfer system to transport products between processing stations.
• Specialized jigs and fixtures for product positioning.
• Multiple riveting heads for different positions, depending on product requirements.
• PLC control system and HMI touchscreen.
• Product and pin inspection sensors as required.

During operation, the pins are delivered from the bowl feeder to the feeding position. At the same time, the product is loaded into the machine and positioned on the jig. The multi-station rotary table or transfer system then sequentially moves the product to the riveting positions to perform the riveting process.

For products that require riveting at multiple positions, automating the processes of pin feeding, product feeding, and transfer between stations can significantly reduce cycle time, minimize manual operations, and improve the overall productivity of the production line.

3. Poka-yoke system integration

Depending on product requirements, the machine can be integrated with Poka-yoke sensors to detect and prevent errors during the assembly and riveting processes.

The system can check conditions such as:

• Whether the product has been correctly positioned.
• Whether the pin has been correctly fed into position.
• Whether any pins are missing.
• Whether the product has the correct code or type.
• Whether all conditions have been met before starting the riveting cycle.

When an incorrect condition is detected, the machine can prevent the riveting cycle from starting or trigger an alarm, helping minimize defective products caused by incorrect operations or missing components.

4. Customer-specific customization

The machine's specifications and structure can be designed and adjusted according to each product and specific production requirements. Some customizable items include:

• Riveting method: Orbital, Radial (Spiralform), or Rollerform.
• Riveting force and riveting head stroke.
• Riveting speed.
• Number of riveting heads.
• Number of riveting positions on the product.
• Jig and fixture structure and dimensions.
• Pin and product feeding methods.
• Number of working stations.
• Production cycle.
• Level of automation.
• Inspection and Poka-yoke sensor systems.

With its flexible design capability, CNC VINA can provide solutions ranging from compact single-head riveting modules to multi-station automatic riveting systems, suitable for various production requirements, from small-batch production to mass production.

Classification of popular bolt riveting machines

Bolt riveting machines are often classified based on the following criteria:

·       According to capacity: small, medium and large capacity machines.

·       According to the number of riveting heads: machine with 1 riveting head, 2 riveting heads, multi-head riveting machine.

·       According to control method: manual dowel riveting machine, CNC automatic dowel riveting machine.

·       By type of bolt: welded bolt riveting machine, threaded bolt riveting machine, friction bolt riveting machine...

·       By industry: bolt riveting machine for automobiles, electronics, medical...

Structure of VINA CNC automatic dowel riveting machine

The automatic dowel feeding and riveting machine manufactured by CNC VINA is composed of 5 main components:

1. PLC control system

·       The rivet program can be addressed and saved

·       Set up multiple riveting modes

·       Built-in logging function, all data is recorded

·       Ethernet and USB interface

·       HMI display screen, LED interface in English and Vietnamese with intelligent error detection and warning capabilities.

·       LED backlight 5.7” touch screen

2. Turntable divided into multiple positions (depending on the number of bolts to be riveted).

3. Automatic latching head according to customer's product and sturdy machine base

4. Transfer cluster: Includes latch-level clusters, product-input clusters and product-out clusters. The rivet pins are automatically fed by an automatic blank feeding system with a vibrating hopper (Bowl vibrating feeder) and vibrating bar (Linear vibrating feeder).

5. Product clamping system: dowel head and set of punches, mortars, and Jig products are designed to be easily replaced for many different product models.

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Applications of VINA CNC dowel riveting and riveting machines in industries

CNC VINA provides customers with automatic pin feeding and riveting machines for most manufacturing fields in important industries such as mechanical engineering, automobiles, motorbikes, and electronics, specifically:

·       Car and motorbike manufacturing: rivets for engine parts, gearboxes, body parts...

·       Production of electrical and electronic equipment: printed circuit rivets, equipment shells, plastic accessories...

·       Manufacturing machinery and equipment: riveting and bolting mechanical assemblies and details.

·       Light industry: riveting of consumer products, household appliances...

·       Medical: riveting surgical instruments and medical equipment.

Riveting machines and automatic rivet stamping machines are manufactured according to customer requirements for products processed in batches and large series. Depending on the material, fixture and quality requirements, the specified process parameters may vary.

Riveting machine for electrical and electronic equipment

With riveting technology from Switzerland, VINA CNC riveting machines provide customers with the ability to join different materials for electrical and electronic equipment such as ceramic or plastic.

·       Circuit breaker riveting machine

·       Electric plug riveting machine – Electrical plug riveting machine

·       Ceramic thermostat for electrical devices riveting machine

·       Conductor plate riveting machine – Conductor plate riveting machine

Bolt riveting machine for auto and motorbike spare parts

CNC VINA provides a range of high quality solutions for the automobile and motorbike industry. Swiss riveting technology is used for various automotive applications.

·       Drive Coupling riveting machine – Drive Coupling riveting machine

·       Steering column riveting machine – Steering column riveting machine

·       Steering fork riveting machine – Steering fork riveting machine

·       Ball bearing riveting machine

·       Brake pad piston riveting machine

·       Hand brake riveting machine

·       Air bag igniter riveting machine – Air bag igniter riveting machine

·       Seat Belt Buckle riveting machine

·       Gasoline filter riveting machine

·       Hinge for luggage space riveting machine

·       Shock mount riveting machine

·       Windshield wipe riveting machine

·       Door lock riveting machine – Door lock riveting machine

·       Striker riveting machine for front door lock panels – Striker riveting machine

·       Seat adjuster riveting machine

·       Door holder riveting machine

Automatic riveting machine for furniture industry accessories

·       Hinges riveting machine – Hinges riveting machine

·       Riveting machine for cabinet hinge accessories – Cabinet hardware riveting machine

·       Window hardware riveting machine –Window hardware riveting machine

·       Portable furniture riveting machine

Automatic riveting machine for precision mechanics and watch accessories

The riveting machines manufactured by CNC VINA are designed to meet the requirements of the precision mechanical industry, such as riveting pins for watch accessories. For this industry, machines with the lowest pressure and very low forces achieve precise, high-quality connections.

·       Watch wheel riveting machine - Watch wheel riveting machine

·       Riveting machine for Manometer / Gauge riveting machine

·       Mechanic alarm clock riveting machine

·       Precision hardware riveting machine

Automatic riveting machine for the medical device industry

For surgical devices, ultrasonic welding is often chosen as the joining method – not without any problems, as the welding process can deform the material. Therefore, riveting technology is increasingly widely used in the medical device industry, because it is the most gentle and absolutely reliable procedure. Depending on the material, fixture and quality requirements, the specified process parameters may vary.

·       Biopsy forceps riveting machine – Biopsy forceps riveting machine

·       Endoscope riveting machine – Endoscope riveting machine

·       Clavicle joint riveting machine

·       Dissection gripper riveting machine

Automatic dowel riveting machine for the consumer industry

·       Safety hook riveting machine – Safety hook riveting machine

·       Snap link riveting machine - Snap link riveting machine

·       Ski binding riveting machine

·       Bicycle lock riveting machine – Bicycle lock riveting machine

Automatic dowel riveting machine for home & garden items

·       Handheld peeler riveting machine

·       Door handle riveting machine – Door handle riveting machine

·       garden shower head riveting machine

·       Washing machine riveting machine

·       Roller bolt riveting machines, bearings, electric pliers, lawn mower equipment...

(*)Riveting is a method used to join two or more parts (mainly panels) together using rivets. A rivet is a cylindrical pin with a cap, one end is inserted through the hole between the parts that need to be joined, then the other end is pulled out using a hammer and a mincing tool. Canopies are often used to join slabs, plates, leaves and other types of I, U, L shaped materials. Canopies are divided into cold canopies, hot canopies and combined canopies.

A rivet is a round pin with a cap on one end. The material is usually mild steel, copper... can also be ceramic

Some common types of rivets: round head rivets, truncated head rivets, flat head rivets, semi-sunk head rivets.

The riveting and dowel riveting machine uses the cold riveting method. Cold riveting is using rivets to rivet. When riveting, there is no need to heat the rivets. In this case, the hole before inserting the rivet has a diameter 0.1 - 0.2 mm larger than the rivet diameter.

Refer to the information of some bolt riveting machine manufacturers

Depending on the customer's application, the following bolt riveting machine manufacturers can be referred to:

·       CNC VINA (Vietnam): specializes in manufacturing dowel riveting machines according to customer requirements.

·       Sakamura (Japan): high precision pin riveting machine for electronics.

·       Orbitform (Germany): multi-purpose dowel riveting machine for many industries.

·       PennEngineering (USA): advanced bolt riveting machines for cars and machinery.

·       Metform (Switzerland): high quality dowel riveting machine for industries.

·       Haeger (USA): bolt riveting machine with modern, advanced technology.

Automatic riveting machine is an ideal solution for businesses looking to increase productivity and maintain consistent joint quality during production. With the ability to combine multiple riveting methods, automatic pin feeding systems, positioning jigs, rotary tables, and PLC control, the machine can handle applications ranging from simple processes to high-volume production lines. Automating pin feeding, product loading, and the riveting cycle helps reduce manual operations, shorten cycle time, and minimize errors during operation. The automatic riveting machine can also be easily integrated with Poka-yoke sensors and inspection functions to improve product quality control. In particular, the machine structure, riveting head, fixtures, and control system can be flexibly designed according to each product type and specific process requirements. With extensive experience in automation machinery manufacturing, CNC VINA can provide consultation and suitable solutions for automatic pin riveting, rivet riveting, and riveting machines tailored to each production process. Customers who require the design, manufacture, or improvement of an automatic riveting system can contact CNC VINA for a solution that meets their specific products and actual production requirements.

Customers who are interested and need to design and manufacture riveting machines, rivet stamping machines, dowel riveting machines, riveting machines, please contact CNC VINA for support: