The material rack is a special equipment for opening the coiled material, and is used for unwinding the placed coil material for the subsequent processes such as leveling and feeding. There are two main types of material racks, one is medium and heavy plate material. Heavy-duty material rack for unwinding; one is a flat electronic feeder for unwinding thin sheet material, and the flat electronic feeder is a horizontal material rack, that is, the axis of the coil on the material rack is horizontal.
In the unwinding of sheet material, the planar electronic feeder is widely used as a horizontal material rack, but there are still some shortcomings. The flat electronic feeder has a large weight and inertia in the process of unwinding the output of the coil. It is difficult to control when starting and stopping, and the material frame that has been output will hang down normally, which will exert additional drag force on the material, increase the difficulty of unwinding length and speed control, and even excessive unwinding, so that materials are stacked. It destroys the flatness of the material and increases the workload of the rear leveling process. During the unwinding process, the material will be deflected. When the material is wider, the discharge tray is correspondingly longer, and the entire plane is fed electronically. The footprint of the machine is large, the rigidity of the discharge tray must be increased by increasing the diameter, and the entire frame must be strengthened to meet the requirements of use, which is also a large increase in the production cost of the equipment.
At this point, you can switch to another material rack that we often overlook, and it is a light material rack. Lightweight material rack is a kind of vertical discharging equipment specially developed for light-weight material discharging and unwinding.
Lightweight material rack production
During the use of the light material frame, the coil material to be unwound is placed on the material support tray, so that the inner hole of the coil is closely attached to the tray, and the sleeve is tightened by tightening the handle of the rack. Moving downward, the inclined wedges on the tightening sleeves move the trays outward by the wedge action of the slopes, and are guided by the guide blocks during the movement, so that the strips are placed on the trays. Under the tensioning action, it is fixedly connected with the vertical shaft; at the same time, under the action of the material frame driving device, the pressure roller arm shaft is rotated by the pressure roller pressing arm, so that the pressure roller is pressed by the pressure roller arm to press the coil material, and is kept constant. The pressing force of the lightweight material frame is unfolded by the pressure roller motor through the pressure roller to rotate the material at a constant linear velocity. At this time, the surface tooth clutch between the vertical shaft motor and the vertical shaft is generally disengaged. The state, that is, the vertical axis motor does not participate in the unwinding drive; when the material frame unwinding operation is completed, the face tooth clutch between the vertical axis motor and the vertical shaft is in an engaged state, and the vertical axis motor drives the vertical axis to reverse, which will be expanded Materials recovery, simple, safe and practical.
