The present invention concerns wrapping machines, and more particularly relates to a portable wrapping machine.
During the past several decades, considerable developments have been made in the field of wrapping a load with a web of film. Most wrapping machines are stationary.
The present invention, according to one aspect, is directed to a method of wrapping goods comprising providing goods on a pallet, with the pallet having a top surface having the goods thereon and at least one side surface, the top surface being located above a floor. The method further comprises providing a wrapping machine with a base and a wrapping arm having a roll of wrap film, providing the base of the wrapping machine with at least one front wheel and at least one rear wheel, positioning a portion of the wrapping machine adjacent the at least one side surface of the pallet, and encircling the goods on the pallet with the wrapping arm to wrap the wrap film around the goods. A circle of rotation of the wrapping arm forms a periphery of a wrap circle area. The at least one front wheel of the base of the wrapping machine is located within the wrap circle area when the pallet is viewed from above. No part of the wrapping machine is located under the pallet during the step of encircling the goods on the pallet.
Yet another aspect of the present invention is to provide a wrap machine assembly comprising a pallet having goods thereon, with the pallet having a top surface having the goods thereon and at least one side surface. The top surface is located above a floor. The wrap machine assembly further includes a wrapping machine having a base and a wrapping arm including a roll of wrap film, with the base of the wrapping machine having at least one front wheel and at least one rear wheel. A portion of the wrapping machine is positioned adjacent the at least one side surface of the pallet. The wrapping arm encircles the goods on the pallet, with a circle of rotation of the wrapping arm forming a periphery of a wrap circle area. The at least front wheel of the base of the wrapping machine being located within the wrap circle area when the pallet is viewed from above. No part of the wrapping machine is located under the pallet.
Yet another aspect of the present invention is to provide a method of wrapping goods comprising providing goods on a pallet, with the pallet having a top surface having the goods thereon and at least one side surface. The top surface is located above a floor. The method further comprises providing a wrapping machine with a base and a wrapping arm having a roll of wrap film, providing the base of the wrapping machine with at least one front wheel and at least one rear wheel, abutting the portion of the wrapping machine against the at least one side surface of the pallet, and encircling the goods on the pallet with the wrapping arm to wrap the wrap film around the goods. No part of the wrapping machine is located under the pallet during the step of encircling the goods on the pallet.
For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as orientated in
The reference number 10 (
In the illustrated example, the portable wrapping machine 10 includes a movable base 12 having a wrapping column 14 mounted thereon. The wrapping column 14 includes a post assembly 18, a cantilevered arm 20 extending from a top of the post assembly 18 and an inverted L-shaped wrapping arm 22 depending downwardly from the cantilevered arm 20. A carriage 24 rides on the inverted L-shaped wrapping arm 22. The wrap film 11 is pulled from a roll 26 of wrap film 11 on the carriage 24 to wrap the goods 28 (see
In the illustrated example, the movable base 12 allows the portable wrapping machine 10 to be moved to the goods 28 to wrap the goods 28 with the wrap film 11. The movable base 12 includes a support plate 34 having at least one front wheel 36 and at least one rear wheel 38 connected thereto, with the at least one front wheel 36 and the at least one rear wheel 38 allowing the movable base 12 and thereby the portable wrapping machine 10 to be moved. In the illustrated example, the movable base 12 has a pair of front wheels 36 and a pair of rear wheels 38. However, it is contemplated that only one rear wheel 38 or only one front wheel 36 could be used or multiple wheels could be used. The support plate 34 is formed of any material that can provide stability to and support every element on the support plate 34. For example, the support plate 34 can be formed of metal (e.g., solid steel of ⅜-inch or ½-inch thickness) or any other stable material.
The illustrated front wheels 36 extend through openings 40 at the front of the support plate 34. A pair of L-shaped axle supports 42 connected to a top of the support plate 34 straddle each front wheel 36 and a front wheel axle 44 extends though the adjacent front wheel 36 and into the pair of L-shaped axle supports 42 to allow the front wheel 36 to rotate. The front wheel axle 44 is located above a top surface 46 of the support plate 34 to allow the support plate 34 to have a low profile and be located close to the floor 30. As shown, the front wheel axles 44 are fixed in position relative to the support plate 34 such that the front wheels 36 are not allowed to turn to be able to turn the portable wrapping machine 10. However, it is contemplated that the front wheels 36 could be configured to turn. Furthermore, the front wheels 36 are configured as passive wheels such that the front wheels 36 do not have their own propulsion system. However, it is contemplated that the front wheels 36 could be powered casters to help move the portable wrapping machine 10.
In the illustrated example, the rear wheels 38 are rotatable to allow the movable base 12 to be turned. As shown in
The illustrated portable wrapping machine 10 includes a steering assembly 56 that is used to push and pull the portable wrapping machine 10 as well as turn the rear wheels 38. The steering assembly 56 includes a steering handle 58, a connecting post 60, a bottom transfer plate 62 and a pair of levers 64. The steering assembly 56 is employed to turn the rear wheels 38 by turning the steering handle 58, with the rotational motion of the steering handle 58 in turn rotating the connecting post 60 and the bottom transfer plate 62. The illustrated steering handle 58, the connecting post 60 and the bottom transfer plate 62 form a solid connection and turn as an integral part. The bottom transfer plate 62 includes a pair of oppositely extending arms 66, with each of the arms 66 being connected to one of the levers 64. As the steering handle 58 and thereby the bottom transfer plate 62 rotate, the levers 64 move along a line to push and pull a wheel arm 68 connected to each of the rear wheels 38. As the bottom transfer plate 62 rotates, the levers 64 push the rear wheels 38 in the same direction, thereby turning the rear wheels 38 and allowing the portable wrapping machine 10 to turn. While a particular system for steering the portable wrapping machine 10 is shown in the drawings, it is contemplated that any system could be employed to turn the rear wheels 38 (and/or the front wheels 36) of the portable wrapping machine 10, including a steer by wire system.
In the illustrated example, the movable base 12 is used to bring the wrapping column 14 to the goods 28 for wrapping the goods 28 (and the pallet 32 if desired). The post assembly 18 of the wrapping column 14 is connected to a top of the support plate 34 adjacent a middle portion thereof and in front of the steering assembly 56. The post assembly 18 includes a pair of spaced parallel vertically extending posts 70. The posts 70 can have braces (not shown) extending between inside surfaces thereof to provide for extra stability for the post assembly 18. A pair of angled side struts 74 can extend from outside surfaces of the posts 70 to a rear portion of the movable base 12 for extra stability. A middle cross-member 72 extends between tops of the posts 70. In the illustrated example, a control panel box 76 can also extend between the posts 70 for further support. The control panel box 76 includes a control panel 78 having buttons and/or switches for controlling the wrapping of the portable wrapping machine 10 and can include a shelf 80 extending from a bottom thereof and a cup holder 82 connected to a side thereof. A U-shaped arm 84 extends rearwardly from the posts 70 and supports a top portion of the connecting post 60 of the steering assembly 56. A top of the post assembly 18 includes a pair of converging pillars 86 connected to a top of the middle cross-member 72 and a top cross-member 88 connected to tops of the converting pillars 86. The cantilevered arm 20 extends from a top of the top cross-member 88.
The illustrated cantilevered arm 20 extends sidewardly from the top of the top cross-member 88 of the post assembly 18. The cantilevered arm 20 of the illustrated embodiment is beam 152 having a rectangular cross-sectional shape. An angled brace 154 (see
In the illustrated example, the inverted L-shaped wrapping arm 22 rotates about the goods 28 to wrap the goods 28 with the wrap film 11. The inverted L-shaped wrapping arm 22 includes a horizontal portion 180 and a vertical portion 182. The carriage 24 is connected to the vertical portion 182 and is configured to move vertically along the vertical portion 182 of the inverted L-shaped wrapping arm 22. An inner end of the horizontal portion 180 of the inverted L-shaped wrapping arm 22 is connected to a bottom of the wrapping axle 166 and rotates with the wrapping axle 166. A second motor assembly 184 is located at a distal end of the horizontal portion 180 of the inverted L-shaped wrapping arm 22. The second motor assembly 184 includes a motor powered that can be powered by a battery and/or a power source from the movable base 12. The second motor assembly 184 includes a spool that is rotated by the motor thereof. A cable 190 extending along the vertical portion 182 is configured to be selectively pulled and wrapped onto the spool or unwound from the spool to raise and lower the carriage 24. Although a particular location of the first motor assembly 156 and the second motor assembly 184 as shown in the drawings for rotating the inverted L-shaped wrapping arm 22 and raising and lowering the carriage 24, it is contemplated that any system of motors, wheels and/or pulleys could be employed to rotate the inverted L-shaped wrapping arm 22 along with raising and lowering the carriage 24.
The illustrated carriage 24 includes the roll 26 of the wrap film 11 used to wrap the goods 28. In the illustrated example, the wrap is pre-stretched before being wrapped about the goods 28 using pre-stretch rollers 200 on the carriage. However, it is contemplated that the carriage 24 could pre-stretch the wrap in order to lengthen the wrap in a manner known to those skilled in the art. In the illustrated embodiment, several portions of the portable wrapping machine 10 are shown as not including a cover. For example, the horizontal portion 152, the pulley wheels 162 and 164, the endless link 167, and a portion of a movable stabilizer 500a detailed below are shown as being exposed. However, all of those portions of the portable wrapping machine 10 can be covered by covers.
Second, a free end of the wrap film 11 extending from the carriage 24 is positioned on the goods 28 or otherwise held on the goods 28. Third, the inverted L-shaped wrapping arm 22 is activated to rotate about the goods 28 with the carriage 24 moving up and down along the vertical portion 182 of the inverted L-shaped wrapping arm 22 by being pulled upward by the cable 190 (via the second motor assembly 184) and by being allowed to lower through the force of gravity to a selected position by the cable 190 (via the second motor assembly 184). The carriage 24 is allowed to move to a position slightly above the floor 30 to be able to position the wrap film 11 about the bottom of the goods 28 and the side surface 302 of the pallet 32, if desired. The carriage 24 and the inverted L-shaped wrapping arm 22 never need to touch the floor 30 to be able to wrap the bottom of the goods 28 and a top area of the sides of the pallet 32.
As shown in
As illustrated in
In the illustrated example, the goods 28 and, if desired, a top portion of the side surface 302 of the pallet 32 can be easily wrapped with wrap film 11 using the portable wrapping machine 10. The base 12 can be positioned to abut the pallet 32 for easily locating the portable wrapping machine 10 in a proper position relative to the pallet 32. It is noted that the base 12 abutting the pallet 32 can include the support plate 34 or any element extending from the support plate 34 and fixed in position relative thereto. As the goods 28 are wrapped, the tension from the wrap film 11 being pulled from the roll 26 and about the goods 28 and/or pallet 32 can pull the base 12 toward the pallet 32 to stabilize the portable wrapping machine 10. It is contemplated that the base 12 could be spaced from the pallet 32 during use and wrapping of the goods 28 as long as the base 12 is held in a stationary position. In such a situation, the front wheel 36 would continue to be located within the wrap circle area 308 and no part of the wrapping machine 10 would be located under the pallet 32.
The above description is considered that of the one embodiment only. Modification of the invention will occur to those skilled in the art and to those who make or use the invention. Therefore, it is understood that the embodiment shown in the drawings and described above is merely for illustrative purposes and not intended to limit the scope of the invention.