A good clamp using a cutter is proven in FIG. 10 and described in more detail in Usa Pat. No. 4,761,934, which can be integrated herein by guide. As demonstrated in FIG. 10, straps 82 and 84 of particular hands 88 and 86 clamp film online 66 between them as a minumum of one of biceps and triceps 86 and 88 are expanded from real estate 81, and relieve film internet 66 when forearms 88 and 86 are retracted into property 81 with a linear actuator in property 81. Additionally, the clamp and cutter might include other elements for cutting and holding the film website.
As demonstrated in FIG. 1, rollers 56 and 58 are metal cradle or trundle rollers placed on structure 50. The rollers each swivel about respective core horizontal axes. Roller 58 is attached in a left arm which is often pivoted about an axis between a increased placement, shown in phantom collections in FIG. 1, for receiving a load, and a reduced placement, proven in solid lines, for wrapping a load 90. A solenoid are often used to actuate and deactuate an air travelling bag or air tube and and thus pivot roller 58 involving the raised and lowered jobs.
Sometimes or each of rollers 58 and 56 can be motivated rollers. Other embodiments can also be in the scope with this creation. An infeed area 92 along with an outfeed work surface 94 are employed to support fill 90 and allow it to roll into and out of your wrapping placement where it can be maintained by roller 56 and 58. Infeed work surface outfeed and 92 area 94 may include, by way of example, declining ramps which aid in transferring weight 90 out and into in the wrapping placement.
The control system 60 might be any kind of numerous alternatives including microcontrollers or relay common sense. It might incorporate a Central processing unit including an Allen-Bradley 5/11 PLC which can handle the procedure within the adhering to approach.
FIGS. 1-8 present a sequence of functioning to the favored embodiment wherein the wrapping series is carried out quickly. As shown in FIG. 1, the leading end of film web 66 is clamped involving forearms 86 and 88 of clamp 80. Buckle associates 84 and 82 of biceps and triceps 86 and 88 engage the sheet substantially throughout its breadth.