LOADINGAPPARATUSFORROLL

Technical Field

[1] The present invention relates to an apparatus for loading a large roll such as a paper roll or a webs roll on a processing line that is elevated from a ground level at a pre¬ determined height without using cranes or forklifts. Background Art

[2] A large roll such as a paper roll is loaded on a conveying apparatus such as a conveyor belt generally using cranes or forklifts because the large roll is very heavy.

[3] Although a processing line is elevated from a ground level even at a short height, it is essential to use the cranes or the forklifts to lift up a large roll and to load the lifted large roll on the processing line. Therefore, an additional operating space is required for the forklifts or the cranes. Furthermore, it is an annoying and time consuming process to load the rolls on the processing line.

[4] In order to overcome such a problem, an apparatus for conveying a roll was introduced in Korea Patent Publication No. 2004-11883 entitled "DEVICE FOR CONVEYING ROLL STRAIGHT BY ROLLING/'issued at 12 ^th JuI. 2005. The con¬ ventional apparatus for conveying the roll is shown in FIGS. 1 and 2.

[5] Referring to FIGS. 1 and 2, the conventional device includes a plurality of conveying units 20 movably disposed in a forward and a backward direction in a case 10. The conveying unit 20 conveys a large roll R by rolling the large roll R, straightly.

[6] A rail 11 is disposed at a bottom side of the case 10 in a length direction and the conveying unit 20 includes a first body 21 and a second body 22. A rear end of the first body 21 and a front end of the second body 22 are allowed to be coupled one anther and separated one from another.

[7] The first and the second bodies 21 and 22 are disposed on a same horizontal axis and each of the first and the second bodies 21 and 22 includes a pair of a first bracket 23 and a second bracket 24 connected by a first shaft 26 and a second shaft 27, re¬ spectively.

[8] Each of the first and the second brackets 23 and 24 includes a first wheel 29 or a second wheel 30 rotatably disposed at the first shaft 26 or the second shaft 27 thereof, respectively.

[9] These first and second wheels 29 and 30 have a same size, and outer circumferences of the first and the second wheels 29 and 30 contact on the rail 11. The conveying unit 20 also includes a pair of rotational brackets 25 having a one end rotatably connected to the second shaft 27 of the second bracket 24 and other end connected to a shaft 28.

A conveying roller 31 is rotatably disposed at the shaft 28.

[10] Also, a distance between the first shaft 26 and the second shaft 27 is longer than a distance between the second shaft 27 and the outer circumference of the first wheel 29.

[11] A rotational motion restricting unit is disposed on outer surfaces of each of second brackets 24 for rotationally moving the conveying roller 31 within an acute angle above an extending line of the first and the second shafts 26 and 27.

[12] The plurality of conveying units 20 is connected one another to be cooperated by a plurality of covers 40 having an opening that allows the bracket 25 and the conveying roller 31 to be projected in an upward direction. One of the conveying units 20 includes a back end of a first body 21 connected to a cylinder 40 and a piston 41 disposed below the rail 11 of the case 10.

[13] As shown in FIGS. 1 and 2, the conventional conveying apparatus has a complicated structure and includes numerous parts. Accordingly, a manufacturing cost thereof is very high. Also, the conventional apparatus cannot load a large roll to a processing line elevated from a ground level at a predetermined height. Therefore, the conventional apparatus is not proper for loading the large roll on the processing line elevated from the ground level. Furthermore, the conventional device requires a high cost and comparatively long time to manufacture and install. Disclosure of Invention

Technical Problem

[14] It is, therefore, an object of the present invention to provide an apparatus of auto¬ matically loading a large roll on a processing line elevated from a ground level without requiring additional equipments.

[15] It is other object of the present invention to provide an apparatus of automatically loading a large roll, which has a simple structure, for easily and conveniently loading the large roll, reducing an operating time and improving an operating efficiency.

[16] It is still other object of the present invention to provide an apparatus of auto¬ matically loading a large roll, which do not require additional equipments such as a crane or a forklift, for reducing a required operating space and proving economic benefits.

[17] It is further still another object of the present invention to provide an apparatus of automatically loading a large roll for eliminating noise and accident arisen by the crane or the forklift moving around an operating space. Technical Solution

[18] In accordance with one aspect of the present invention, there is provided an apparatus for automatically loading a large roll on a processing line elevated from a ground level at a predetermined height, the apparatus including: a first operating plate

foldably disposed at an upper surface of the apparatus; a second operating plate connected to the first operating plate by a link; an elevating unit for supporting and elevating the second operating plate to form a predetermined angle from the first operating plate so as to roll a roll thereon.

[19] The apparatus may further include a threshold protrusion stably supporting the large roll when the large roll is conveyed.

[20] The elevating unit may include: a piston for pushing up the second operating plate; a cylinder for moving the piston by pressurizing the piston; and a control panel for controlling the piston and the cylinder by pressurizing or depressurizing.

[21] The piston and the cylinder may be operated by air pressure or by oil pressure.

Advantageous Effects

[22] An apparatus of automatically loading a large roll provides advantageous effects as follows. [23] At first, a large roll is loaded on a processing line elevated from a ground level without requiring additional equipments. [24] Secondly, the apparatus has a simple structure and requires easy and convenient operations to load the large roll on the processing line. Therefore, a required operating time is reduced and an operating efficiency is improved. [25] Thirdly, a less operating space is required since the apparatus according to the present invention does not require the additional equipment such as a crane or a forklift. Accordingly, economic benefits are provided. [26] Fourthly, noise and accidents arisen by the crane or the forklift are eliminated.

Brief Description of the Drawings [27] The above and other objects and features of the present invention will become apparent from the following description of the preferred embodiments given in conjunction with the accompanying drawings, in which: [28] FIG. 1 is a side view of an apparatus for conveying a paper roll according to the related art; [29] FIG. 2 is a side view of the apparatus shown in FIG. 1 for describing the operations thereof; [30] FIG. 3 is a perspective view of an apparatus for automatically loading a large roll according to an embodiment of the present invention; [31] FIG. 4 is a side cross-sectional view of the apparatus for automatically loading a large roll shown in FIG. 3; [32] FIG. 5 is a perspective view of the apparatus shown in FIG. 3 for describing operations thereof; and [33] FIG. 6 is a side cross-sectional view of the apparatus shown in FIG. 5 for describing

operations thereof.

Best Mode for Carrying Out the Invention

[34] Other objects and aspects of the invention will become apparent from the following description of the embodiments with reference to the accompanying drawings, which is set forth hereinafter.

[35] FIG. 3 is a perspective view of an apparatus for automatically loading a large roll according to an embodiment of the present invention, and FIG. 4 is a side cross- sectional view of the apparatus for automatically loading a large roll shown in FIG. 3.

[36] Referring to FIGS. 3 and 4, the automatic roll loading apparatus loads a large roll

500 on a processing line that is elevated from a ground level at a predetermined height. The automatic roll loading apparatus according to the present embodiment includes a first operating plate 210 foldably disposed at a top of the automatic roll loading apparatus, a second operating plate 220 connected to the first operating plate 210 by a link 230 as a shaft, and an elevating unit 300 for supporting or elevating the second operating plate 220 to form a predetermined angle from the first operating plate 210 so as to roll the large roll 500.

[37] In order to load the large roll 500 on the processing line elevated from a ground level at a predetermined height, a groove is formed on a ground by digging a pre¬ determined area of the ground and a frame 100 is planted at the groove to have a top plate 120 of the frame 100 to be parallel to the ground level.

[38] The second operating plate 220 is rotatably disposed at the center of a top plate 120 by a link 230 as a shaft and the first operating plate 210 is also rotatably disposed on the center of the top plate 120. The elevating unit 300 is disposed under the second operating plate 220 to push up the second operating plate 220.

[39] The elevating unit 300 includes a piston 310 to push up the second operating plate

220, a cylinder 340 for moving the piston 310 by pressurizing the piston 310, and a control panel (not shown) for controlling operations of the piston 310 and the cylinder 340 to pressurize or depressurize.

[40] Such a cylinder 340 and a piston 310 may be operated as an air pressure as well as an oil pressure.

[41] Therefore, a typical oil press (not shown) may be included for supplying or releasing an oil pressure, or a typical air compressor (not shown) may be included for supplying or releasing an oil pressure.

[42] In order to stably support the large roll 500 and to prevent the large roll 500 from dropping, the automatic roll loading apparatus further includes a pair of threshold protrusions 110 formed on each side end of the top plate 120 and a tilting protrusion 360 formed on a bottom surface 350 of the cylinder to support the cylinder 340 when it

is tilted according to the loading operation.

[43] The cylinder 340 includes a pair of cylinder supporting plates 130 and 140 formed inside the frame 100, the tilting protrusion 360 formed between the supporting plates 130 and 140, a cylinder supporting plate 330 additionally disposed at an one side of the cylinder 340 and the cylinder supporting plate 330 is connected to the cylinder 340 by a cylinder fixing bar 320. Therefore, the cylinder 340 is rotated about the cylinder fixing bar 320 moving in a forward and a back direction.

[44] Hereinafter, operations of the automatic roll loading apparatus according to the present invention will be described in detail with reference to FIGS. 5 and 6.

[45] FIG. 5 is a perspective view, and FIG. 6 is a side cross-sectional view of the apparatus shown in FIG. 5 for describing operations thereof.

[46] Referring to FIGS. 5 and 6, if a pressure is supplied to the piston 310 reciprocating in the cylinder 340, the piston 310 moves along the cylinder 340 in an upward direction and pushes up the second operating plate 220 with the link 230 as a center to form a predetermined angle from the first operating plate 210.

[47] Accordingly, a large roll loaded on the first and the second plates 210 and 220 rolls along the first and the second plates 210 and 220 in a forward direction.

[48] Herein, the first operating plate 210 is rotationally moved about rotational shifts

240, 250 and 260 connected the frame 100 thereunder and is elevated to be parallel to the height of the threshold protrusions 110. Accordingly, the large roll 500 rolls over the threshold protrusions 110 and loaded on the processing line elevated from a ground level.

[49] The heights of the elevation of the first operating plate 210 and the threshold protrusion 110 are controlled according to the height of the elevated level of the processing line. Generally, the processing line is elevated from the ground level at several cm or 10s cm. Accordingly, the height of the threshold protrusion 110 is controlled according to the height of the processing line.

[50] While the present invention has been described with respect to certain preferred em¬ bodiments, it will be apparent to those skilled in the art that various changes and modi¬ fications may be made without departing from the scope of the invention as defined in the following claims.