The utility model discloses an independent single-channel pressure-free square
bottle feeding device which comprises a
machine frame, a plurality of conveying chains, a driving device,
bottle lacking detection devices, supports, supporting rods, partition plates and fasteners, the conveying chains are installed on the
machine frame and independently driven, the
bottle lacking detection devices are arranged at the two ends of the
machine frame, the supports are vertically arranged on the two sides of the machine frame, the supporting rods are arranged at the upper ends of the supports, and the partition plates are arranged on the supporting rods. The supporting rod is sleeved with a partition plate and a
fastener. A width adjusting device is further arranged on the machine frame and comprises a shaft seat, a guide rod, a sliding block and a shear fork mechanism, the sliding block is connected with the conveying chain, and the shear fork mechanism is composed of a connecting rod and a plug pin. The sliding blocks at the two ends are connected with a push plate, and the push plate is provided with a nut, a lead screw, a mounted bearing and a
crank handle. The
crank handle is rotated to rotate the lead screw to drive the sliding blocks to move, the shear fork mechanism stretches out and draws back, the distances between the sliding blocks are kept the same, and the conveying chains are driven to synchronously adjust the distances to adapt to bottles of different sizes. The device can effectively adjust the distance between the conveying chains, meet the requirements of different bottles, and improve the production efficiency and the product quality.