4results about How to "Damage prevention" patented technology

The application relates to the field of optical fiber winding, and discloses a mesh multi-core optical fiber winding device which comprises a rack, a winding component and a feeding assembly arranged on the rack, the winding component comprises a winding assembly, a first linear module and a driving assembly, the winding assembly comprises two movable supports, the opposite sides of the two movable supports are provided with rotating shafts, the opposite ends of the two rotating shafts are coaxially provided with winding shafts, the opposite ends of the two winding shafts are coaxially provided with side discs, the rotating shafts are in the shape of hollow shafts and are provided with avoiding openings on the outer circular surfaces, the guiding directions of the avoiding openings are parallel to the axial line directions of the rotating shafts, the rotating shafts coaxially have second lead screws inside, the movable supports are provided with movable discs outside, the inner annular surfaces of the movable discs are provided with support bodies, the support bodies are in threaded connection with the second lead screws, the support bodies are in sliding guiding cooperation with the avoiding openings, the side of the movable disc facing the winding shaft is provided with a limiting lug, and the limiting lug is made of elastic material.

The utility model discloses a dividing and cutting machine for plastic packaging bag production, which comprises a working box arranged on a base plate, a conveying belt is arranged in the working box in a penetrating manner, an electric lifting frame is arranged above the conveying belt, a cutting knife is arranged at the bottom of the electric lifting frame, compression rollers are arranged on two sides of the cutting knife, and the compression rollers are arranged on the base plate. The top of each pressing roller is vertically connected with an electric push rod, an auxiliary pressing roller is arranged between the pressing rollers, the auxiliary pressing rollers are connected with a reciprocating linear motion mechanism, the reciprocating linear motion mechanism can be lifted in a servo mode, a photoelectric sensor is arranged over the auxiliary pressing rollers, a distance sensor is arranged over the pressing rollers, and the distance sensor is connected with the photoelectric sensor. A dust collection mechanism is further arranged on the auxiliary pressing roller. Compared with the prior art, by arranging the electric push rod, the pressing roller, the auxiliary pressing roller, the reciprocating linear motion mechanism, the photoelectric sensor and the distance sensor, the plastic bag feeding device has the advantages that the auxiliary pressing roller is utilized, tensile deformation of a plastic bag is avoided, and the quality of the plastic bag is guaranteed.

This utility model relates to the technical field of pre-cooling devices, and provides a pre-cooling device for preserving fruits and vegetables after harvesting. It includes a shell, a box for storing ice packs fixedly installed on the bottom inner wall of the shell; two support blocks fixedly installed on the inner walls of both sides of the box, with placement frames for storing fruits and vegetables placed on the two support blocks, each placement frame having multiple first through holes; a cover plate disposed on the shell; two mesh frames fixedly installed on the inner walls of both sides of the shell, each mesh frame having an odor-removing box for deodorization and sterilization inside; a cover fixedly installed on the cover plate; and a fixing mechanism assembled on the cover for pressing the fruits and vegetables. The pre-cooling device for preserving fruits and vegetables after harvesting provided by this solution solves the problem of existing pre-cooling devices for preserving fruits and vegetables after harvesting lacking a fixing function, leading to easy collision damage to fruits and vegetables during transportation.