KR20250000383A - Apparatus and method for packing pallet loads - Google Patents

Abstract

The present invention relates to a packaging device and a packaging method for packaging a load loaded on a pallet, and more specifically, to a packaging device and a packaging method for a pallet load using an elastic film, in which a packaging cover made of an elastic film is expanded according to the size of the load, then unfolded from the top to the bottom of the load to cover the load, and then the film is compressed through its own elastic restoring force to closely adhere to the outer surface of the load to package it.

Description

{APPARATUS AND METHOD FOR PACKING PALLET LOADS}

The present invention relates to a packaging device and a packaging method for packaging a load loaded on a pallet, and more specifically, to a packaging device and a packaging method for a pallet load using an elastic film, which expands a packaging cover made of an elastic film according to the size of the load, unfolds it from the top to the bottom of the load to cover the load, and then compresses it through the elastic restoring force of the elastic film to tightly adhere it to the outer surface of the load to package it.

In general, manufactured goods are packaged in paper boxes or synthetic resin boxes to prevent damage. The boxes or boxes containing the goods are loaded onto pallets for easy storage or transportation. The goods loaded onto the pallet are wrapped using thin film (vinyl) to protect them from moisture or foreign substances.

Known methods for packaging cargo loaded on a pallet include a wrapping method in which a ramping film is used to wrap the cargo by rolling it around the perimeter of the cargo, and a wrapping method in which an elastic film, such as a hood film or stretch film with an open bottom, is placed on top of the cargo and then the elastic film is pulled downward from the top to cover the cargo.

The wrapping method usually rotates the packaging device around the pallet or pallet, so the load may fall over or spill during the wrapping process due to centrifugal force or pulling force. In addition, in the wrapping method, there are many parts where the wrapping film overlaps during the ramping process. This causes unnecessary waste of wrapping film, and the amount of wrapping film that is eventually discarded also increases, which can cause environmental pollution.

The method of covering a load by vertically dropping an elastic film is a method to replace the wrapping method, and has been proposed in prior literature such as Korean Patent No. 10-1319406, Korean Patent No. 10-1319406, Korean Patent No. 10-1645271, Korean Patent No. 10-1689140, Korean Patent No. 10-1799312, and Korean Patent No. 10-2485955.

However, most of the packaging devices using flexible films suggested in the aforementioned prior literature are manufactured in large sizes. For example, since the film supply/cutting/sealing (fusion)/film width expansion/lowering processes are integrated into one device, the structure is more complex than that of the existing ramping packaging device. As a result, when constructing a packaging device, a considerable amount of installation cost is required, making initial equipment investment difficult, and the packaging device is quite large, which inevitably limits the installation space. As a result, there was a problem that small businesses or places with limited installation space could not realistically install existing large-scale packaging devices.

KR 10-1319406 B1, 2013. 10. 11. KR 10-1645271 B1, 2016. 07. 28. KR 10-1689140 B1, 2016. 12. 19. KR 10-1799312 B1, 2017. 11. 14. KR 10-2485955 B1, 2023. 01. 03.

Therefore, the present invention can be proposed to solve the above-mentioned conventional problems.

The problem (purpose) to be solved by the present invention is to provide a pallet loading packaging device and packaging method using an elastic film, which can improve the installation distribution rate of packaging devices by simplifying the configuration of the packaging device compared to conventional packaging devices, thereby reducing the manufacturing cost and initial equipment investment cost, and manufacturing it with a compact design to reduce the volume, thereby enabling easy installation without installation space restrictions even in relatively narrow places.

In addition, another problem to be solved by the present invention is to provide a pallet load packaging device and packaging method using an elastic film capable of stably packaging a load regardless of the width and shape (square and rectangular) of the load loaded on the pallet.

In addition, the present invention is not limited to the purposes described above, and various purposes can be additionally provided through the techniques described in the embodiments and claims described below.

In order to achieve the above object, the present invention according to an embodiment comprises: a horizontal guide; a plurality of first vertical guides installed in parallel with each other in the X-axis direction on the upper portion of the horizontal guide; a table on which a pallet loaded with a load is placed on the upper portion, and on which both sides are vertically movably coupled to the plurality of first vertical guides and raised and lowered along the first vertical guide; a first elevator that raises and lowers the table along the first vertical guide; a plurality of second vertical guides installed on the horizontal guide in parallel with the first vertical guide, but spaced apart from the horizontal guide by a predetermined interval from each other on the outside of the table so that the width of the entrance of a packaging cover for packaging the load can be expanded; a plurality of elevating jigs that are introduced into the entrance of the packaging cover and are hung in a direction in which the width of the entrance of the packaging cover is expanded, and are vertically movably coupled to the second vertical guides respectively; a second elevator that raises and lowers the elevating jigs along the second vertical guide; And the present invention provides a pallet loading packaging device including a mover for horizontally moving the second vertical guide to adjust the gap between the lifting jig and the table.

In addition, the width of the entrance of the packaging cover can be adjusted by the lifting jig that moves in conjunction with the second vertical guide that moves by the moving device.

In addition, when the lifting jig is raised by the second elevator, the lower part of the entrance side of the packaging cover is folded up, and when lowered, the supporting force supporting the lower part of the entrance side of the packaging cover is released so that the lower part of the entrance side of the packaging cover can be unfolded while freely falling due to its own weight, thereby covering and packaging the load.

Additionally, the second vertical guide can be installed radially around the table.

Additionally, the first and second elevators may be formed with electric cylinder devices.

In addition, the device may further include an upper cover installed on the upper portions of the first and second vertical guides so as to be parallel to the horizontal guide, and an LM guide may be installed on the lower portion and upper portion of the second vertical guide, respectively, and an LM block slidably coupled to the LM guide may be installed on the upper portion of the horizontal guide and the ceiling portion of the upper cover, respectively.

In addition, the device further includes a fixing member installed on the horizontal guide and the LM guide installed on the upper cover so as to be parallel to the second vertical guide, and a plurality of position sensors can be installed on the fixing member at predetermined intervals to detect the position of the lifting jig.

In addition, the portion of the lifting jig that comes into contact with the packaging cover may have a rounded structure.

Additionally, the horizontal guide may have a caster installed at the bottom.

Additionally, the horizontal guide may have a hollow formed in the center of the lower side of the table and a recessed groove formed in the Y-axis direction to secure a working space.

Additionally, the packaging cover may be formed into a box structure with an open entrance.

In addition, according to another embodiment of the present invention for achieving the above-mentioned purpose, the present invention provides a pallet load packaging method including a process of introducing the lifting jig into the inlet of the packaging cover; a process of inserting a pallet onto a table; and a process of covering and packaging a load loaded on the pallet in a process of lowering the lifting jig so that the lower part of the inlet side of the packaging cover freely falls due to its own weight.

In addition, the method may further include a process of moving the lifting jig outwardly of the table before lowering the lifting jig, thereby pulling the inlet of the packaging cover outwardly to expand the width of the inlet of the packaging cover.

In addition, after the process of packaging the load loaded on the pallet, the process of separating the lifting jig from the entrance of the packaging cover and pressing the packaging cover against the outer surface of the load through the elastic restoring force of the packaging cover may be further included.

In addition, in the process of attaching the packaging cover to the outer surface of the load, the pallet can be raised upward while the load is covered by the packaging cover, thereby separating the lifting jig from the lower part of the inlet side of the packaging cover.

In addition, in the process of attaching the packaging cover to the outer surface of the load, the lifting jig can be further lowered while the load is covered by the packaging cover to separate the lifting jig from the lower end of the inlet side of the packaging cover.

As described above, according to the pallet loading packaging device and packaging method according to the embodiment of the present invention, since the packaging cover is packaged in a free-fall manner by its own weight, the structure is simplified compared to the conventional packaging device, thereby reducing the manufacturing cost and initial equipment investment cost, and the volume is also reduced, so that it can be easily installed and operated even in relatively narrow spaces.

In addition, according to the pallet loading packaging device and packaging method according to an embodiment of the present invention, when lowering the packaging cover to package the load, instead of forcibly lowering the packaging cover, the packaging cover is lowered in a free-fall manner due to its own weight, thereby preventing the packaging cover from tearing even if it gets caught on the load when lowering the packaging cover.

In addition, according to the pallet loading packing device and packing method according to an embodiment of the present invention, the gap between the table and the vertical guide can be freely adjusted according to the size (width) of the pallet or the load loaded on the pallet, thereby stably packing the load regardless of the width and shape (square and rectangular) of the pallet or the load loaded on the pallet.

In addition, according to the pallet load packaging device and packaging method according to the embodiment of the present invention, the packaging cover made of an elastic film is contracted by its own elastic restoring force to closely adhere to the outer surface of the load, thereby preventing a gap between the packaging cover and the load, and thereby blocking the inflow of moisture, water, or foreign substances between the packaging cover and the load.

In addition, according to the pallet loading packaging device and packaging method according to an embodiment of the present invention, when the elastic film is lowered (vertically dropped) and spread to package the load, air is injected into the space between the load and the inner side of the packaging cover to separate the load and the inner side of the packaging cover, so that the packaging cover does not interfere with the load.

FIG. 1 is a drawing showing a state in which a pallet load is packed through a packing cover according to an embodiment of the present invention.
Figure 2 is a drawing showing the packaging process using a packaging cover.
FIG. 3 is a front view of a pallet loading packaging device according to an embodiment of the present invention.
FIG. 4 is a drawing of a pallet loading packaging device according to an embodiment of the present invention as viewed from above.
FIG. 5 is a drawing showing a table according to another example of the present invention.
Figure 6 is a drawing showing a state in which the packaging cover is folded by the elevation of the lifting jig according to the present invention.
Figure 7 is a drawing showing a state in which a packaging cover is spread out and a load is packaged by lowering an elevating jig according to the present invention.
FIG. 8 is a drawing showing a method for packaging pallet loads according to an embodiment of the present invention.
FIG. 9 is a drawing showing a method for packing pallet loads according to another embodiment of the present invention.
Figure 10 is a drawing showing a packaging cover with an adjusted inlet width according to the present invention.
FIG. 11 is a drawing showing a packaging cover according to another example of the present invention.
FIG. 12 is a drawing of a pallet loading packaging device according to another embodiment of the present invention.
Figure 13 is a drawing showing a pair of Y-axis guides shown in Figure 12.
FIG. 14 is a drawing showing a pallet loading packaging device according to another embodiment of the present invention.
FIG. 15 is a drawing showing a pallet loading packaging device according to another embodiment of the present invention.
FIG. 16 is a drawing showing a pallet loading packaging device according to another embodiment of the present invention.
FIG. 17 is a drawing showing an elevating jig according to another example of the present invention.
FIG. 18 is a drawing showing a pallet loading packaging device according to another embodiment of the present invention.
Figure 19 is a drawing of the pallet loading packaging device shown in Figure 18 viewed from the front.
Figure 20 is a drawing showing a pallet loading packaging device with the side cover of Figure 18 removed.
Fig. 21 is a drawing partially showing the configuration for raising the table in Fig. 20.
Figure 22 is a drawing of Figure 21 viewed from the front.
Fig. 23 is a drawing partially showing a configuration for raising and lowering the lifting jig in Fig. 20.

Hereinafter, the advantages and features of the present invention and the methods for achieving them will be apparent by referring to the embodiments described in detail below together with the accompanying drawings. Throughout this specification, the same reference numerals refer to the same components. In addition, when it is described as 'A and/or B', it may mean both A and B, or it may mean either A or B. In addition, each component shown in each drawing may be excessively illustrated in size and shape, but this is for the convenience of explanation and is not intended to be limiting.

FIG. 1 is a drawing showing a state in which a pallet load is packed using a packing cover according to an embodiment of the present invention, and FIG. 2 is a drawing schematically showing a packing process using a packing cover.

Referring to FIGS. 1 and 2, a packaging device according to an embodiment of the present invention packages a load (2) on a pallet (1) using a packaging cover (3) having a box structure with an open bottom and a closed top, instead of packaging a load loaded on a pallet using a conventional wrapping method.

The packaging cover (3) is opened at the bottom, and the opened bottom functions as an inlet through which the load (2) of the pallet (1) is introduced. For example, if the packaging cover (3) has a square box structure, the inlet of the packaging cover (3) may be formed as a square opening. In addition, the inside of the packaging cover (3) is provided with an internal space for accommodating the load (2) introduced through the inlet.

As shown in Fig. 2, the packaging cover (3) may be structured to include a main body (3a) having four sides with the upper and lower sides open to cover the sides except for the upper and lower parts of the load (2), and a cover (3b) formed on the upper part of the main body (3a) and sealing the upper part of the open main body (3a).

The main body (3a) may be formed as a tube structure with the front side (entrance side) and the rear side open, for example. The main body (3a) may be formed integrally with the cover (3b). For example, the cover (3b) may have a square structure, and each circumference may be joined (heat-sealed) to the opened upper part of the main body (3a) through a sealing process. Through this, the cover (3b) seals the opened upper part of the main body (3a).

As shown in Fig. 2, if the packaging cover (3) is formed in a square shape, the main body (3a) may be formed in four sides. However, this is only an example, and in the embodiment of the present invention, a packaging cover formed in a circular shape, such as a circular tube, is not excluded. In this way, the main body (3a) of the packaging cover (3) may be formed in various shapes depending on the shape of the load.

These packaging covers (3) use an elastic film that, when pulled outward, expands in width due to elasticity and increases in internal volume, and when the pulling force is removed, returns to its original size due to its own elastic restoring force, returning to the size before the internal volume was expanded. A hood film or a stretch film can be used as the elastic film, and polyethylene (PE) can be used as the main material as the material having elasticity.

In addition, a weight (not shown) having a predetermined size may be installed at the bottom of the inlet side of the packaging cover (3) so that the packaging cover (3) can be stably deployed by free fall when it is deployed by free fall, or the bottom part of the inlet side may be folded in multiple stages so that the center of gravity is tilted. At this time, the weight may be any one of a synthetic resin material, rubber material, wood or metal material having a greater weight than the packaging cover (3) so that free fall is possible, and these may be installed along the bottom circumference of the inlet side, and although the shape thereof is not particularly limited, it may be formed as a structure such as a rod structure or a weight.

FIGS. 3 and 4 are schematic drawings showing a pallet loading packing device according to an embodiment of the present invention. Here, FIG. 3 is a drawing of the pallet loading packing device seen from the front, and FIG. 4 is a drawing of the pallet loading packing device shown in FIG. 3 seen from above.

Referring to FIGS. 3 and 4, a pallet loading packing device (10) according to an embodiment of the present invention includes a table (11) that supports the lower portion of a pallet (1) on which a load (2) to be packed is loaded. At this time, the table (11) may be a fixed table or may be formed as a turn-table that is coupled to a drive shaft of a drive motor (not shown) and rotates within a range of 0° to 360°.

FIG. 5 is a schematic diagram illustrating a table according to another example of the present invention.

As another example of a table, as shown in Fig. 5, the table (21) may be a transfer conveyor. A table (21) formed as a transfer conveyor can provide an advantage of easily transferring a pallet (1) to a packaging section (a section where a load (2) is packaged by a packaging cover (3)).

The table (21) may include, for example, an input section where a pallet (1) loaded with a load (2) is input, a packaging section where the load (2) loaded on the pallet (1) is packaged using a packaging cover (3), and a discharge section where the pallet (1) whose packaging is completed by the packaging cover (3) is discharged.

The discharge section may be omitted, and the packaged load (2) in the packaging section may not be transported to the discharge section, but may be re-transported to the input section in the opposite direction to the transport direction and discharged. For example, when a pallet (1) loaded with a load (2) is fed into the input section of the table (21), the pallet (1) is transported to the packaging section, and the load (2) is packaged by the packaging cover (3). The pallet (1) whose packaging is completed by the packaging cover (3) is transported back to the input section and discharged.

If the table (11) is formed of a fixed table or a rotary table rather than a transfer conveyor, a transfer conveyor may be additionally installed on one side of the front of the table (11) to easily transfer the pallet (1) to the table (11). At this time, the upper surface height of the table (11) may be constructed to be the same as the upper height of the transfer conveyor, or the end of the transfer conveyor may be constructed to be placed on the upper part of the table (11). Through this, the pallet (1) may be easily transferred to the upper part of the table (11) through the transfer conveyor.

The table (11) according to the various examples of the present invention described above is installed in consideration of the environment of the work space, workability, etc. For example, it may be installed directly on the ground (floor surface), or it may be installed on top of a separate workbench, etc. having a predetermined height from the ground in order to position the table (11) at a predetermined height. In addition, the table (11) may be installed with casters (wheels) so that it can move along the ground, and a brake, etc. may also be installed so that it can be locked in a fixed state. In addition, the table (11) may be formed in a circular, oval, or square structure, and its material may be made of metal, engineering plastic, wood, etc.

As shown in FIGS. 3 and 4, a plurality of horizontal guides (12) can be installed on the side of the table (11).

The horizontal guide (12) may be installed separately from each other, for example, in four pieces as shown in Fig. 4, but may be connected to a single body or formed integrally. In addition, the horizontal guide (12) may be connected to the table (11) through a separate connecting member or may be formed integrally.

When packaging a load (2) using a packaging cover (3), a plurality of horizontal guides (12) extend (tension) the inside of the packaging cover (3) outward so that the packaging cover (3) does not interfere with the load (2), thereby expanding the width of the entrance of the packaging cover (3) through which the load (2) is introduced to a predetermined size corresponding to the size of the load (2). Preferably, the entrance of the packaging cover (3) is expanded to be larger than the width of the load (2). Through this, when the packaging cover (3) is lowered and covers the load (2), the load (2) can be stably packaged without interfering with the packaging cover (3).

As an example, the horizontal guide (12) may be installed radially spaced outward from the side of the table (11) centered on the table (11), as shown in Fig. 4. For example, if the table (11) has a square structure, one may be installed at each position corresponding to the vertices (four vertices) of the table (11). At this time, the horizontal guide (12) may be installed so as to be able to move diagonally within an equiangular range so that the lifting jig (14) of the vertical guide (13) can pull the entrance of the packaging cover (3) outward in a diagonal direction to expand it.

In order to uniformly expand the entrance and internal space of the packaging cover (3), two horizontal guides (12) installed on the left side of the table (11) are arranged diagonally so that the gap between them increases as they go outward from the table (11), and the two horizontal guides on the right side are also arranged diagonally so that the gap between them increases as they go outward from the table (11), and the left horizontal guide and the right horizontal guide can be formed in a symmetrical structure.

As shown in FIGS. 3 and 4, a vertical guide (13) is installed on each horizontal guide (12).

The vertical guide (13) is coupled to move horizontally along the horizontal guide (12). That is, the vertical guide (13) moves horizontally in a linear reciprocating motion along the horizontal guide (12) within a set range. As an example, the horizontal guide (12) functions as a guide rail (e.g., LM guide), and a guide block (e.g., LM block) coupled to the horizontal guide (12) and moving linearly in a reciprocating motion along the horizontal guide (12) may be provided at the bottom of the vertical guide (13).

Each vertical guide (13) is connected one-to-one to a horizontal guide (12). Accordingly, a total of four can be installed in a post structure in a direction orthogonal to the horizontal guide (12). For example, the vertical guide (13) and the horizontal guide (12) can be orthogonal robots. For example, it can be any one of a belt type orthogonal robot, a ball screw type orthogonal robot, or a linear type orthogonal robot.

As shown in FIGS. 3 and 4, a lifting jig (14) is installed on the vertical guide (13) to lift and fold or unfold the lower part of the packaging cover (3), respectively. The lifting jig (14) is coupled to lift and lower in the vertical direction along the vertical guide (13). That is, the lifting jig (14) lifts and lowers vertically along the vertical guide (13) within a set range. As an example, the vertical guide (13) may function as a guide rail of the lifting jig (14), and the lifting jig (14) may be provided with a guide block that is coupled to the vertical guide (13) and lifts and lowers along the vertical guide (13).

The horizontal guide (12), vertical guide (13), and lifting jig (14) may be configured as, for example, a three-axis orthogonal robot. In addition, the lifting jig (14) may be raised and lowered in a pulley manner, like the lifting structure of an elevator. For example, it may be configured to be raised and lowered along the vertical guide (13) using a gear (pulley), chain (belt), or drive motor. In this way, the lifting method of the lifting jig (14) is not particularly limited and can be driven by various driving methods.

FIGS. 6 and 7 are drawings schematically showing the state of the packaging cover according to the rising and falling of the lifting jig according to the present invention. FIG. 6 is a drawing showing the state in which the packaging cover is folded by the rising of the lifting jig, and FIG. 7 is a drawing showing the state in which the packaging cover is unfolded by the lowering of the lifting jig and the load loaded on the pallet is wrapped by the packaging cover.

Referring to FIGS. 6 and 7, the lifting jig (14) may be formed as a ring structure with an open top, which is joined to the lower end of the entrance side (the lower ends of the four side portions of the packaging cover (3)) of the packaging cover (3) which is formed as a roughly rectangular (or hexahedral) box structure with an open bottom, so that the lower end of the entrance side of the packaging cover (2) is hung and supported in a downward direction. For example, the shape of the lifting jig (14) may be formed in an 'inverted L' shape, a 'U' shape, or a fishhook or hook shape so that the lower end of the entrance side of the packaging cover (2) is inserted and hung and supported in a downward direction. In addition, any shape in which the lower end of the entrance side of the packaging cover (3) is inserted and hung in a downward direction may be applied.

The lifting jig (14) is installed one by one on each of the four vertical guides (13), as shown in Fig. 4. The four lifting jigs (14) are interconnected and move the same distance when driven. For example, when the lifting jig (14) rises along the vertical guide (13) by the driving motor, the four side parts on the entrance side of the packaging cover (3) are folded together and raised due to the rise of the four lifting jigs (14). Then, when the lifting jig (14) reaches the top of the vertical guide (13) within the set range, the packaging cover (3) is folded and overlapped like a blind curtain, as shown in Fig. 6. On the contrary, when the lifting jig (14) descends along the vertical guide (13) as shown in Fig. 7, the four side parts of the packaging cover (3) that were folded due to the rise of the lifting jig (14) are unfolded while freely falling due to their own weight. In this process, the load (2) that is fed (or transported) to the packaging section (packaging point) is covered by a packaging cover (3) and packaged.

FIG. 8 is a drawing schematically illustrating a method for packaging pallet loads according to an embodiment of the present invention.

Referring to Fig. 8, before placing a pallet (1) loaded with a load (2) onto a table (11), the lifting jig (14) is raised to raise the packaging cover (3) and position it in a folded state at the top of the vertical guide (13). At this time, the height of the packaging cover (3) is determined according to the height of the load (2) loaded onto the pallet (1). That is, the lower part of the packaging cover (3) is positioned higher than the load (2) loaded onto the pallet (1) so as not to interfere with the load (2) when placing the pallet (1).

Next, the pallet (1) loaded with the load (2) is fed into the table (11). At this time, the pallet (1) is fed into the table (11) so that the load (2) and the opened entrance of the packaging cover (3) are aligned vertically. For example, when the load (2) and the opened entrance of the packaging cover (3) are not aligned when the pallet (1) is fed, the load (2) and the packaging cover (3) can be aligned vertically by adjusting the position of the table (11) using the casters provided on the table (11). In addition, a separate alignment device can be installed on the upper part of the table (11) to align the pallet (1) placed on the table (11). At this time, the alignment device can be a hydraulic, pneumatic or electric cylinder device.

Next, a pallet (1) loaded with a load (2) is inserted into the table (11). Of course, the pallet (1) may be inserted first, and then the load (2) may be loaded on top of the pallet (1). When the load (2) loaded on the pallet (1) and the inlet side of the packaging cover (3) are aligned vertically, the elevating jig (14) is lowered along the vertical guide (13). When the elevating jig (14) is lowered, the lower part of the inlet side of the packaging cover (3) that is supported downward by the elevating jig (14) is released. Accordingly, the lower part of the inlet side of the packaging cover (3) falls freely downward due to its own weight. In this process, the folded part of the packaging cover (3) is gradually unfolded and spread by its own weight, sequentially covering the load (2) from the upper part of the load (2). And when the lifting jig (14) is lowered further or the table (11) is raised, the lifting jig (14) is separated from the entrance side of the packaging cover (3). Accordingly, the packaging cover (3) is tightly pressed against the outer surface of the load (2) while the expanded width returns to the original width by its own elastic restoring force.

FIG. 9 is a drawing schematically illustrating a method for packaging pallet loads according to another embodiment of the present invention.

Referring to FIG. 9, in a pallet loading packing method according to another embodiment of the present invention, a process of adjusting the width (extent) of the entrance of the packing cover is added to the pallet loading packing method shown in FIG. 8. The other configurations are the same as the pallet loading packing method shown in FIG. 8.

The process of adjusting the width of the entrance of the packaging cover is to prevent the load (2) from interfering with the packaging cover (3) when packaging the load (2) using the packaging cover (3). The method of adjusting the width of the entrance of the packaging cover can be implemented by moving the vertical guide (13) outward along the horizontal guide (12). When the vertical guide (13) moves outward along the horizontal guide (12), the lifting jig (14) coupled to the vertical guide (13) also moves along the vertical guide (13) by the movement distance of the vertical guide (13), and in this process, the packaging cover (3) coupled to the lifting jig (14) is pulled outward, thereby expanding the width of the entrance of the packaging cover (3). At this time, the movement distance of the vertical guide (13) is determined according to the width of the load (2).

Figure 10 is a drawing schematically showing a packaging cover with an adjusted inlet width according to the present invention.

Referring to FIG. 4 and FIG. 10, a method of adjusting the width of the opening of the packaging cover is to move the vertical guide (13) outwardly, i.e., away from the table (11), along the horizontal guide (12) in accordance with the width (depth) of the load (2). When the vertical guide (13) moves, the lifting jig (14) coupled to the vertical guide (13) also moves by the same distance as the vertical guide (13) moves.

When the lifting jig (14) moves outward, the packaging cover (3) supported by the lifting jig (14) is stretched by the amount of the moving distance of the lifting jig (14) due to the elasticity (elasticity) of the material property of the fabric, and accordingly, the width of the entrance of the packaging cover (3) is expanded. In this way, as the width of the entrance of the packaging cover (3) is expanded by the set size, when packaging a load (2) using the packaging cover (3), the load (2) can be stably introduced and packaged through the expanded entrance of the packaging cover (3) without interference between the packaging cover (3) and the load (2).

Meanwhile, the process of adjusting the width of the entrance of the packaging cover (3) may be performed before or after the pallet (1) loaded with the load (2) is placed on the upper part of the table (11). Alternatively, it may be performed while the packaging cover (3) is lowered and unfolded by the lifting jig (14).

FIG. 11 is a drawing schematically showing a packaging cover according to another example of the present invention.

As shown in Fig. 11, a packaging cover (31) according to another example of the present invention may be manufactured using a tubular vinyl fabric that is integrally sealed or sealed on one side, unlike the packaging cover (3) shown in Fig. 2, and may have a structure in which a sealing joint (31a) is formed on both sides facing each other. In this case, the sealing joint (31a) may be formed in an approximately 'Y' shape.

Fig. 12 is a schematic drawing of a pallet loading packing device according to another embodiment of the present invention. Here, Fig. 12 is a drawing of the pallet loading packing device viewed from above.

Referring to FIG. 12, a pallet loading packing device (40) according to another embodiment of the present invention includes a table (41), a horizontal guide (45), a vertical guide (46), and an elevating jig (not shown), similar to the pallet loading packing device (10) shown in FIGS. 3 and 4. Here, a gap adjusting means is further included to secure a space in which the pallet (1) and/or the load (2) is loaded by adjusting the gap between the table (41) and the horizontal guide (45) centered on the table (41) in response to the width of the pallet (1) and/or the load (2) loaded onto the table (41).

The above gap adjusting means includes, as an example, a pair of first X-axis guides (42) installed in the X-axis direction on the ground (floor surface), a pair of Y-axis guides (43) each slidably coupled in the X-axis direction on top of the first X-axis guide (42) and linearly reciprocating along the first X-axis guide (42), and a pair of second X-axis guides (44) installed in the X-axis direction so as to be orthogonal to the pair of Y-axis guides (43) and slidably coupled in the Y-axis direction along the pair of Y-axis guides (43) and linearly reciprocating along the pair of Y-axis guides (43).

Figure 13 is a schematic diagram of a pair of Y-axis guides shown in Figure 12 as viewed from above.

Referring to FIGS. 12 and 13, when a pair of Y-axis guides (43) slide in the X-axis direction along the first X-axis guide (42), the point where the second X-axis guide (44) intersects with the second X-axis guide (44) may be formed in a '+'-shaped structure (see 'A') so that the second X-axis guide (44) coupled to the upper portion does not interfere.

A pair of Y-axis guides (43) are each provided with an intersection point ('A') that intersects the X-axis and Y-axis directions. Accordingly, when a pair of Y-axis guides (43) slide along the first X-axis guide (42) in the X-axis direction, they can move along the first X-axis guide (42) in the X-axis direction without interfering with the second X-axis guide (44) coupled to the pair of Y-axis guides (43).

As shown in Fig. 12, a pair of Y-axis guides (43) can be moved individually in the X-axis direction, or moved the same distance in conjunction with each other. When moved in conjunction with each other, a pair of Y-axis guides (43) can be moved in a direction away from the table (41) or moved simultaneously in a direction approaching the table (41) with the table (41) as the center.

A pair of second X-axis guides (44) may also be moved individually in the Y-axis direction, similar to a pair of Y-axis guides (43), or may be moved simultaneously by the same distance in conjunction with each other. In the case of being moved in conjunction with each other, they may be moved simultaneously in a direction away from the table (41) or in a direction approaching the table (41) with the table (41) as the center.

A plurality of horizontal guides (45) are respectively connected diagonally to the upper portions of a pair of second X-axis guides (44), and a vertical guide (46) that slides along the horizontal guide (45) is connected to each of the horizontal guides (45). An elevating jig, to which an entrance-side end of a packaging cover (3) is connected, is connected to the vertical guide (46) so as to slide along the vertical guide (46).

In this way, the pallet loading packaging device (40) according to another embodiment of the present invention can stably package not only square-shaped loads but also rectangular-shaped loads through the first X-axis guide (42), the Y-axis guide (43), and the second X-axis guide (44).

FIG. 14 is a schematic drawing of a pallet loading packaging device according to another embodiment of the present invention, and is a drawing viewed from the front.

Referring to FIG. 14, a pallet loading packing device (50) according to another embodiment of the present invention includes a table (51), a horizontal guide (52), a vertical guide (53), and an elevating jig (54), like the pallet loading packing device (10) shown in FIG. 3, and further includes an air injector (55).

The air injector (55) injects air into the interior of the packaging cover (3) that is deployed while being lowered by the lifting jig (54), that is, into the space between the load (2) and the inner side of the packaging cover (3). This allows the packaging cover (3) that is deployed while being lowered to be separated from the load (2) using air, thereby preventing the packaging cover (3) from interfering with the load (2) when being lowered. If the packaging cover (3) gets caught on the load (2) when being lowered, the packaging cover (3) may be torn, but by separating them using the air injector (55), the packaging cover (3) can be prevented from being torn.

The air injector (55) can be installed at the bottom of the vertical guide (53). And, the air injection nozzle is installed so that it protrudes further toward the table (51) than the elevating jig (54) so as not to interfere with the elevating jig (54). The air injector (55) can include an air compressor.

As the air injection nozzle (55) is installed on the vertical guide (53), when the vertical guide (53) moves, it moves along with the vertical guide (53) by the distance that the vertical guide (53) moves, thereby being aligned with the space between the load (2) and the inner side of the packaging cover (3) that wraps the load (2).

FIG. 15 is a drawing schematically illustrating a pallet loading packaging device according to another embodiment of the present invention, as viewed from above.

Referring to FIG. 15, a pallet loading packing device (60) according to another embodiment of the present invention includes a table (61), a horizontal guide (64), a vertical guide (45), an elevating jig (not shown), and a spacing adjustment means, similar to the pallet loading packing device (40) shown in FIG. 12.

The above spacing adjustment means may be configured with a simplified structure compared to the spacing adjustment means proposed in the pallet load packing device (40) shown in Fig. 12. As an example, the spacing adjustment means includes a pair of X-axis guides (62) installed in the X-axis direction on the ground (floor surface), and a pair of Y-axis guides (63) each slidably coupled to the upper portion of the X-axis guides (62) in the X-axis direction and linearly reciprocating in the X-axis direction along the X-axis guides (62).

A rail groove (63a) is formed in the longitudinal direction on the upper portion of a pair of Y-axis guides (63). A horizontal guide (64) is slidably connected to the rail groove (63a) formed on a pair of Y-axis guides (63) in the Y-axis direction. For example, two horizontal guides (64) can be slidably connected to the rail groove (63a) of one Y-axis guide (63) in the Y-axis direction at a predetermined interval as a pair.

The horizontal guide (64) moves along a pair of X-axis guides (62) in the X-axis direction by a pair of Y-axis guides (63) that slide in the X-axis direction, and moves along a rail groove (63a) formed in a pair of Y-axis guides (63) in the Y-axis direction. Accordingly, the horizontal guide (64) can move in the X-axis direction and/or the Y-axis direction with the table (61) as the center.

FIG. 16 is a schematic drawing of a pallet loading packaging device according to another embodiment of the present invention, and is a drawing viewed from the front.

Referring to FIG. 16, a pallet loading packing device (70) according to another embodiment of the present invention includes a table (71), a horizontal guide (72), a vertical guide (73), and an elevating jig (74) similar to the pallet loading packing device (10) shown in FIG. 3. In addition, an elevator (75) for vertically raising and lowering the table (71) to a predetermined height is further included. In addition, any one of the spacing adjusting means shown in FIG. 12 and FIG. 15 may be further included.

The elevator (75) can be used to separate the packaging cover (3) from the lifting jig (74). As shown in Fig. 8, when the lower part of the packaging cover (3) is lowered and developed to a set height through free fall, the elevator (75) raises the table (71) to the set height. When the table (71) is raised by the elevator (75), the packaging cover (3) also rises together with the table (71). In this process, the packaging cover (3) is separated from the lifting jig (74), and eventually, the force (outward pulling force) applied to the packaging cover (3) by the lifting jig (74) is removed, so that the packaging cover (3) can be compressed and closely attached to the load (2) due to the elastic restoring force according to the elasticity.

The elevator (75) that raises and lowers the table (71) can raise and lower the table (71) by using a rope type or hydraulic type that uses a counterweight, such as the driving method of an elevator (lift). Alternatively, any one of a two-post lift, a four-post lift, an X-shaped lift, or a built-in lift method used as an automobile lifting device can be used.

A two-post or four-post lift is a lift method that is installed by fixing a steel structure (post) to the floor. An X-type lift is a method that lifts by crossing the lift in an X shape when the hydraulic cylinder is operated. A built-in lift is a lift method that is built into the ground.

In addition, the elevator (25) may be formed of an electric cylinder device, such as an actuator, which is easy to control. Specific examples related to this will be described later.

It is preferable that the elevator (75) be installed with related devices only on both sides of the table (71) in the X-axis direction so that a work space can be secured in the Y-axis direction of the table (71). This allows a space for a worker to enter the table (71) in the Y-axis direction of the table (71). The worker can enter the table (71) in the Y-axis direction, place a pallet (1) on the table (71), and then load a load (2) on top of the pallet (1). Then, when packaging of the load (2) is completed in the same manner as in Fig. 8 or Fig. 9, the pallet (1) can be lifted from the table (71) and discharged using a forklift or the like on the opposite side.

Meanwhile, a caster (72a) may be installed at the bottom of the horizontal guide (72) to enable movement.

FIG. 17 is a schematic drawing of an elevator jig according to another example of the present invention, and is a perspective view.

Referring to FIG. 17, a lifting jig (84) according to another example of the present invention includes a roller (84b) that rotates around a central axis without power on both sides of a ring (84a) that is slidably connected up and down to a vertical guide to disperse the pulling force so that the packaging cover (3) is not torn or damaged when pulling the side of the packaging cover (3).

FIG. 18 is a drawing showing a pallet loading packing device according to another embodiment of the present invention, FIG. 19 is a drawing showing the pallet loading packing device shown in FIG. 18 as seen from the front, and FIG. 20 is a drawing showing the pallet loading packing device with the side cover removed.

Referring to FIGS. 18 to 20, a pallet loading packing device (90) according to another embodiment of the present invention is another embodiment that specifically illustrates the configuration of the pallet loading packing devices shown in FIGS. 3, 12, and 15, and includes a table (91), a horizontal guide (92), a vertical guide (93) (hereinafter, referred to as “first vertical guide”), and an elevating jig (94). In addition, a side cover (95) and an upper cover (96) installed to cover the side and the upper portion may be further included.

The table (91) is configured to move up and down along the first vertical guide (93). A plurality of first vertical guides (93) can be installed on each of the two sides (both sides in the X-axis direction) of the table (91).

The table (91) is slidably connected to the first vertical guide (93) by means of clamps (911) fastened to both sides. A sliding bearing or a rolling bearing may be installed inside the clamp (911) so as to be slidable along the first vertical guide (93).

The clamp (911) can be fixedly fastened to both sides of the table (91) via a fixed bracket (912).

Fig. 21 is a drawing partially showing a configuration for raising the table in Fig. 20, and Fig. 22 is a drawing looking at Fig. 21 from the front.

Referring to FIGS. 20 to 22, the table (91) is raised and lowered along the first vertical guide (93) via an elevator (97) (hereinafter referred to as “first elevator”). The first elevator (97) may be formed of an actuator, which is an electric cylinder device, for easy precision control and compact configuration.

The main body (main body of the actuator) of the first elevator (97) is fixedly fastened to the ceiling of the upper cover (96), and the rod is fixedly fastened to both sides of the table (91) via a fixing bracket (913). As the first elevator (97) is driven, the table (91) moves up and down along the first vertical guide (93).

The horizontal guide (92) may be formed as a floor support and may have a plate-shaped structure. In order to realize weight reduction and secure a working space when loading a pallet (1) and a load (2) onto the pallet (1), the horizontal guide (92) may have a hollow (92a) of a predetermined size formed in the center, as in Fig. 20, and a groove (92b) may be formed in the Y-axis direction (front and rear) toward the hollow (92a) so as to allow close approach to the table (91).

The horizontal guide (92) may be directly installed and fixed to the ground, or may be installed at a predetermined height from the ground through a leg member (not shown) having a predetermined height. Alternatively, the horizontal guide (92) may have multiple casters (921) installed at the bottom to allow easy movement.

Fig. 23 is a drawing partially showing a configuration for raising and lowering the lifting jig in Fig. 20.

Referring to FIG. 20 and FIG. 23, a total of four lifting jigs (94) are installed, similar to the other embodiments described above, and are slidably connected to a second vertical guide (98) installed parallel to the first vertical guide (93) to rise and fall along the second vertical guide (98).

The second vertical guide (98) may be formed as a pair of two for stable elevation of the elevation jig (94), and each of them is installed at four locations of the horizontal guide (92). For example, the second vertical guide (98) may be installed radially with the table (91) as the center in order to radially and uniformly expand the width of the entrance side of the packaging cover (3). LM guides (99) are installed at the upper and lower portions of the second vertical guide (98), respectively. An LM block (100) that is slidably coupled to the LM guide (99) is installed at the upper portion of the horizontal guide (92) and the ceiling portion of the upper cover (96). Conversely, the LM blocks may be installed at the upper and lower portions of the second vertical guide (98), and the LM guides may be installed at the upper portion of the horizontal guide (92) and the ceiling portion of the upper cover (96).

A mover (101) is installed to move the second vertical guide (98) via the LM block (100) and the LM guide (99). The mover (101) may be an orthogonal robot. For example, it may be formed by an actuator, which is an electric cylinder device. The main body (actuator main body) of the mover (101) is fastened and fixed to the horizontal guide (92), and the load may be fastened and fixed to the LM guide (99). Accordingly, when the mover (101) is driven, the LM guide (99) moves via the LM block (100) in conjunction with the load. Then, the second vertical guide (98) installed on the LM guide (99) also moves by the same amount as the movement distance of the LM guide (99). As a result, the lifting jig (94) also moves in conjunction with this, so that the worker can adjust the width of the inlet side of the packaging cover (3), as shown in FIG. 10.

The lifting jig (94) may have a rounded structure at the part that comes into contact with the packaging cover (3), as shown in Fig. 23, so that the inlet side of the packaging cover (3) is not torn when the packaging cover (3) is extended outward. This lifting jig (94) is connected to the second vertical guide (98) via the clamp (102). The clamp (102) has a sliding bearing or a rolling bearing installed inside where the second vertical guide (98) is connected, so that it can slide up and down along the second vertical guide (98).

A second elevator (103) may be installed on one side of the LM guide (99) installed on the upper side of the second vertical guide (98). The second elevator (103) is connected to the clamp (102) and raises the clamp (102). The second elevator (103) may be an electric cylinder device, such as an actuator, for precise control and compact configuration. In addition, it may be hydraulically or pneumatically operated, or may be operated by a chain or belt method using a driving motor.

A fixing member (104) may be installed vertically on one side of the LM guide (99) installed on the upper and lower sides of the second vertical guide (98). A plurality of position sensors (105) may be installed at predetermined intervals on the fixing member (104) to detect the position of the clamp (102) (height of the lifting jig (94)). At this time, the position sensor (105) may be either a contact or non-contact type. For example, any one of a mechanical, electric, magnetic or optical sensor may be used.

Meanwhile, as shown in Fig. 20, a plurality of posts (106) may be installed between the horizontal guide (92) and the upper cover (96) to vertically support the horizontal guide (92) and the upper cover (96). A control panel (107) may be installed on the upper part of the horizontal guide (92) to supply power to the first and second elevators (97, 103) and the moving unit (101) and to control the operation. In addition, various warning lights or sirens may be additionally installed for the safety of workers.

As described above, although the preferred embodiments of the present invention have been described and illustrated using specific terms, such terms are only for the purpose of clearly describing the present invention. In addition, it is self-evident that various changes and modifications can be made to the embodiments of the present invention and the described terms without departing from the technical spirit and scope of the following claims. Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should be considered to fall within the claims of the present invention.

10, 40, 50, 60, 70, 90 : Pallet Loading Packaging Device
11, 41, 51, 61, 71, 91 : Table
12, 45, 52, 64, 72, 92 : Horizontal Guide
13, 46, 53, 65, 73 : Vertical Guide
14, 54, 74, 84, 94 : Lifting jig
1: Pallet 2: Load
3, 31: Packaging cover 3a: Body
3b: Cover 31a: Sealing joint
42: 1st X-axis guide 43: Y-axis guide
44: 2nd X-axis guide 55: Air blower
62: X-axis guide 63: Y-axis guide
63a : Rail Home 72a : Caster
75 : Elevator 84a : Hook
84b: Roller 92a: Hollow
92b : Home 93 : 1st vertical guide
95: Side cover 96: Top cover
97: 1st elevator 98: 2nd vertical guide
99: LM guide 100: LM block
101: Moving machine 103: Second elevator
102, 911, : Clamp 104 : Fixture
105 : Position sensor 106 : Post
107: Control panel 912, 913: Fixed bracket
921 : Caster

Claims (16)

horizontal guide;
A plurality of first vertical guides installed parallel to each other in the X-axis direction on top of the above horizontal guide;
A table having a pallet loaded with cargo placed on the upper part, and having both sides connected to the plurality of first vertical guides so as to be able to move up and down, and rising and falling along the first vertical guide;
A first elevator for raising and lowering the above table along the first vertical guide;
A plurality of second vertical guides installed on the horizontal guide in parallel with the first vertical guide, but spaced apart from each other by a predetermined interval on the outside of the table so that the width of the entrance of the packaging cover for packaging the load can be expanded;
A plurality of lifting jigs that are introduced into the entrance of the packaging cover and are hung in a direction in which the width of the entrance of the packaging cover expands, and are respectively connected to the second vertical guide so as to be able to move up and down;
A second elevator that elevates the above-mentioned lifting jig along the second vertical guide; and
A mover for adjusting the gap between the lifting jig and the table by horizontally moving the second vertical guide;
A pallet loading packaging device including:
In paragraph 1,
The above packaging cover is a pallet loading packaging device in which the width of the entrance is adjusted by the lifting jig that moves in conjunction with the second vertical guide that moves by the moving device.
In paragraph 1,
The above-mentioned lifting jig is a pallet loading packaging device that folds up the lower part of the entrance side of the packaging cover when raised by the second elevator, and when lowered, releases the supporting force supporting the lower part of the entrance side of the packaging cover so that the lower part of the entrance side of the packaging cover falls freely due to its own weight and unfolds, thereby covering and packaging the loaded material.
In paragraph 1,
The above second vertical guide is a pallet loading packaging device installed radially around the above table.
In paragraph 1,
The above first and second elevators are pallet loading packaging devices comprising electric cylinder devices.
In paragraph 1,
A pallet loading packaging device further comprising an upper cover installed on the upper portions of the first and second vertical guides so as to be parallel to the horizontal guide, wherein LM guides are installed on the lower and upper portions of the second vertical guide, respectively, and LM blocks slidably coupled to the LM guides are installed on the upper portions of the horizontal guides and the ceiling portions of the upper cover, respectively.
In paragraph 6,
A pallet loading packaging device further comprising a fixing member installed on the horizontal guide and the LM guide installed on the upper cover so as to be parallel to the second vertical guide, and a plurality of position sensors installed on the fixing member at predetermined intervals to detect the position of the lifting jig.
In paragraph 1,
The above lifting jig is a pallet loading packaging device in which the part that comes into contact with the above packaging cover has a rounded structure.
In paragraph 1,
The above horizontal guide is a pallet loading packaging device with casters installed at the bottom.
In paragraph 1,
The above horizontal guide is a pallet loading packaging device having a hollow formed in the center of the lower side of the above table and a concave groove formed in the Y-axis direction to secure a working space.
In paragraph 1,
The above packaging cover is a pallet loading packaging device having a box structure with an open entrance.
In a pallet loading packing method using a pallet loading packing device according to any one of claims 1 to 11,
A process of introducing the above lifting jig into the entrance of the above packaging cover;
The process of placing a pallet on a table; and
The process of lowering the above lifting jig, and covering and packaging the load loaded on the pallet while the lower part of the entrance side of the above packaging cover is unfolded while freely falling due to its own weight;
A method for packing palletized materials including:
In Article 12,
A pallet loading packaging method further comprising a step of moving the lifting jig outwardly of the table before lowering the lifting jig, thereby pulling the entrance of the packaging cover outwardly to expand the width of the entrance of the packaging cover.
In Article 12,
A method for packing a pallet load, further comprising, after the process of packing the load loaded on the pallet, separating the lifting jig from the entrance of the packing cover and pressing the packing cover against the outer surface of the load using the elastic restoring force of the packing cover.
In Article 14,
A pallet loading packaging method in which, in the process of attaching the above packaging cover to the outer surface of the above load, the pallet is raised upward while the load is covered by the packaging cover, and the lifting jig is separated from the lower part of the entrance side of the packaging cover.
In Article 14,
A pallet loading packaging method in which, in the process of attaching the above packaging cover to the outer surface of the above load, the above lifting jig is further lowered while the above load is covered by the above packaging cover to separate the above lifting jig from the lower part of the entrance side of the above packaging cover.