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Turning rolls are often used for the welding of inner and outer circumferential seams and inner and outer longitudinal seams of some cylinders. Among them, it is composed of a base, a driving wheel, a driven wheel, a bracket, and a driving device. It can be used in combination with welding positioner and welding manipulator to realize welding automatic production line, and to a large extent reduce labor intensity, and improve the driving force for production efficiency.
Manufacturing structure of turning rolls
1. Anti-channeling mechanical execution structure
Generally speaking, the workpiece is moved in the axial direction by friction force on the turning rolls, but in order to optimize it, many manufacturers realize that the turning rolls can be moved to the opposite direction at will during the spiral movement. The current technology can be implemented in three areas:
(1) Jack-up actuator
This form allows the driven wheel to move up and down and offsets the axis of the workpiece. This method greatly improves the adjustment sensitivity of turning rolls and is suitable for some larger workpieces.
(2) Offset type actuator
The rollers on both sides of the driven wheel move in the same direction along the vertical centerline, thereby causing the workpiece to shift. This form is also very sensitive.
(3) Translational actuator
This form is known by the name. Turning rolls do the horizontal movement. It has many advantages. Not only is it extremely stable, but its structure is also very simple, and it does not take up additional installation space.
2. Control of driving wheel speed
The mainstream drive currently adopted by turning rolls is stepless speed regulation, which can achieve smooth rotation, and it can be adjusted by DC or AC frequency conversion. After DC speed regulation enters the market, many factories and manufacturers often encounter failures, and the cost is also high. Therefore, the current AC frequency conversion speed regulation has become the mainstream of the moment. On this basis, the manufacturer also separates each driving wheel. Equipped with an electric motor and geared motor.
3. Adaptive control
In order to make turning rolls more automated, we generally add parameter tracking algorithms to its system, allowing the computer to automatically track the signals it returns and preset action thresholds.
Our roller racks generally come in many forms, the most common of which are:
Self-adjusting turning rolls
Self-adjusting tuning rolls are mainly used in the assembly and welding of pipelines, vessels, and pressure vessels. The most commonly used matching method is to combine with welding manipulator and welding positioner to realize the inner and outer longitudinal seam welding and inner and outer circumferential seam welding of the workpiece. The biggest advantage of self-adjusting turning rolls is that the factory can automatically adjust the diameter of the workpiece. The swing angle of the roller set can be automatically adjusted.
Adjustable turning rolls
Adjustable turning rolls are composed of a driving wheel and a driven wheel. It adopts the form of stepless speed change. In terms of the welding process, it can greatly meet the needs of manual welding, automatic surfacing welding, automatic submerged arc welding and so on. In other words, the arduousness between the driving wheel and the driven wheel can be adjusted by adjusting the screw rod, which has met different welding requirements.
20 Tons conventional turning rolls
Anti-channeling welding turning rolls
The process of anti-tampering turning rolls is mentioned above, that is, on the basis of adjustable turning rolls, the driven frame of turning rolls is made up and down and embedded in the system so that it can be controlled by the controller.