How to achieve the blocking of roller line accumulation?

The core idea of the drum line accumulation blocking is to give the drum the ability to "slip", and then cooperate with the blocking mechanism to block the material, achieving the material to stop while the drum continues to rotate. This can cache materials without jamming the entire line or burning out the motor.

1、 Implementation method

1. Accumulation drum (core component): The shaft of a regular drum is rigidly connected to the outer wall of the drum, and the drum rotates when the shaft rotates. The interior of the accumulation drum is connected by friction plates, springs, and bearings, and the outer wall of the drum is driven by friction when the shaft rotates. Once the material is blocked, the resistance on the outer wall of the drum exceeds the frictional force, causing internal slippage and idling. The shaft continues to rotate but the drum does not, and the material stops steadily.

2. Blocking mechanism (executing action): The most commonly used is the blocking cylinder, installed at the workstation where material needs to be stopped. When the cylinder extends, the stopper rises to block the material, and when it retracts, it is released. The cylinder head is usually equipped with rollers to avoid scratching the material.

3. Sensor and electronic control (automatic control): Install a photoelectric sensor in front of the blocking position to detect that the material is in place and send a signal to the PLC, which controls the cylinder action. This can achieve automatic blocking and automatic release, coupled with multi-stage independent control to achieve continuous accumulation.

2、 Comparison of several common solutions

-Simple blocking type: A regular drum line with a blocking cylinder can only be temporarily stored at a single point, with a simple structure and low cost, but it cannot continuously store multiple materials and has a relatively large impact.

-Segmented pneumatic stacking: The entire line is divided into multiple independent stacking units, each with cylinders and sensors, which can continuously store multiple trays. It has strong load-bearing capacity and universal accessories, but requires air supply and noise.

-Electric roller stacking: Each section is independently driven by an electric roller and controlled by start stop, without the need for cylinders or air sources. The start stop is gentle and precise, suitable for precision electronic workshops, but the cost is higher.

-Hybrid stacking: pneumatic for heavy-duty sections and electric drum for light-duty precision sections, matched as needed to balance load-bearing and precision, but with the highest design difficulty.