Stretch plastic geogrid automatic winding and unwinding machine and using method thereof

Abstract

The invention relates to a stretch plastic geogrid automatic winding and unwinding machine and a using method thereof. The machine comprises a fixed rack, an air expansion shaft and a rotating mechanism, wherein one end of the air expansion shaft is in shaft connection with the rack, and the rotating mechanism drives the air expansion shaft to rotate. The machine further comprises an unwinding mechanism and a movable supporting device, the movable supporting device is slidably connected to the rack in the radial direction of the air expansion shaft, and a supporting part is slidably arranged on the movable supporting device in the axial direction of the air expansion shaft. The other end of the air expansion shaft is in shaft connection with the supporting part. The unwinding mechanism comprises a movable box body which is slidably connected to the rack, a grating roll pushing plate fixedly connected to the movable box body, and a walking device for driving the movable box body to movein the axial direction of the air expansion shaft. The grating roll pushing plate is arranged on the side, away from the supporting part, of a grating roll. According to the machine, the labor intensity of winding workers can be reduced, the labor cost of an enterprise can be reduced, the length of a clamped grating in the original winding process can be shortened, the production cost can be reduced, the phenomenon that the end face of the grating roll is not orderly is eliminated, construction is facilitated, the construction cost can be reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of processing equipment, in particular to the field of processing equipment for stretched plastic geogrids, in particular to an automatic winding and unwinding machine for stretching plastic geogrids and a method for using the same. Background technique [0002] Stretched plastic geogrid products are made of high-density polyethylene (HDPE) or polypropylene (PP) as raw materials and color masterbatches, which are heated and plasticized to extrude sheets, punch holes, heat, and stretch longitudinally or transversely. The plastic mesh with a width of 2-6 meters and a thickness of 3-6 mm with holes can reorient the scattered chain molecules of the polymer material into a linear state by stretching, which fully improves the tensile strength of the plastic geogrid. strength and stiffness. Now it is widely used in projects such as roads, railways, airports, docks, and reinforced earth walls or steep slopes of riv...

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Problems solved by technology

[0003] The tensile plastic geogrid production line has a history of more than 20 years in China. Although some improvements have been made to the rewinding and unloading machine of the grid mesh, the principles, structures, methods and methods of the rewinding and unloading machines of various domestic manufacturers are There is no fundamental technological breakthrough. This method of winding and unloading has the following problems that need to be solved urgently: 1. When winding, one end of the grid is clamped by using one thick and one thin steel pipe, and two sets are prepared to be used alternately. The thick steel pipe weighs nearly 50 kilograms, and two people in each shift carry and unload the rewinding steel pipe nearly 200 times. The labor intensity of the workers is high, and each rewinding and uncoiling machine requires 3-4 people; , use the steel wire rope of the special hoist to pull out the two steel pipes of the core from the grid roll, and then manually lift the two steel tubes back to the coiling station. When the steel pipes are pulled out, the grid at the core of the grid coil 3. In this winding method, the first 40-50 cm of each roll must be folded 180 degrees from the middle of the two steel pipes, and the grid is pinned to the thin steel pipe before closing. The main steel pipe of the roll rolls and starts to roll. When laying the grid net, it is nearly 1 meter long at the end. Because the grid at the core of the roll has been plastically deformed, it is very laborious to unroll. It is necessary to cut off the grid that cannot be opened, which is very inconvenient for construction. , the user has repeatedly asked for improvement; 4. The square head at both ends of the main steel pipe for winding and the connecting square hole of the connecting disc that can be controlled by the cylinder to expand and contract in the axial direction are often stuck due to wear and deformation when unloading the roll, and the roll cannot be unloaded. Repair welding repair, thin steel pipe is also easy to bend

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