KR20060011508A - Pallet for vertical loading - Google Patents

Abstract

The present invention relates to a vertically stacked pallet capable of vertically loading a plurality of sub-assemblies such as wide and thin door panels. A body comprising a plurality of vertical bars and horizontal bars and facing each other among the horizontal bars. Beams arranged at a predetermined interval on an upper portion of the horizontal bar and having latches rotatably connected to the horizontal bar; The latch does not normally protrude into the body from the horizontal bar, but when the subassembly is loaded, the latch protrudes to the inside of the body to support the one end of the subassembly so that vertical loading of the subassembly is automatically performed. To do it.

Description

Vertical pallet stacking {Pallet for vertical loading}

1 is a perspective view showing a conventional vertically stacked pallet;

FIG. 2 is an enlarged perspective view of the locking bar of FIG. 1; FIG.

3 is a perspective view showing a vertically stacked pallet according to the present invention;

4 is an exploded perspective view illustrating the latch of the vertically stacked pallet according to the present invention;

5 is a perspective view showing the latch of the vertically stacked pallet according to the present invention; And

6a to 6c show the operation of the vertically stacked pallet according to the invention.

<Description of Symbols for Main Parts of Drawings>

1 body 10 horizontal bar

20: vertical bar 30: subassembly

50: latch 51: rotation axis

52: base 53: elastic member

54: locking projection 55: extension member

56: fixing member 520: straight surface

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet used to load and transport a subassembly when moving a subassembly such as a wide and thin panel to an assembly line in the automobile industry composed of a plurality of parts. More specifically, the present invention relates to a pallet that can automatically regulate a loading position when vertically loading a subassembly such as a panel.

In general, in the automobile assembly process, a plurality of sub-assemblies such as a door panel are first assembled in an assembly jig, and then transported and assembled to an automobile assembly line. In order to transport the sub-assembly to the assembly line, a pallet for loading it is required.

1 is a perspective view showing a conventional vertically stacked pallet, Figure 2 is a perspective view showing an enlarged latch bar of FIG. As shown in FIG. 1, a conventional vertically stacked pallet includes a rolling means 101 at a lower portion thereof, and a box-shaped body 100 having a space in which a sub-assembly 130 is loaded. The body 100 includes a plurality of horizontal bars 110 (110a, 110b, 110c, ...; 110 ': 110a', 110b ', 110c', ...) and vertical bars (120: 120a, 120b, 120c, ...). The body 100 may be installed vertically a plurality of sub-assembly 130, such as a thin panel, horizontally facing the engaging bars 140 for temporarily fixing the vertical sub-assembly (130) A plurality of bars 110 and 110 ′ are formed.

As shown in FIG. 2, the horizontal bars 120 wrap around the fixing bars 121 and the fixing bars 121 positioned inward, and are adjacent to each other at equal intervals so as to be rotatable with respect to the fixing bars 121. It is composed of a plurality of rotation bar 122 is installed, the rotation bar 122 is coupled to the engaging bar 140 extending outward from the outer peripheral surface. The locking bar 140 may be located inside or outside the body 100 according to the rotation of the rotation bar 122.

As shown in FIG. 2, the locking bar 140 is composed of two rods 141a and 141b having a predetermined interval, and the locking bar 140 is located inside the body 100. Between one bar 141a 'of the hanging bar 140' installed in one rotating bar 122 'and one bar 141b "of the hanging bar 140" provided in the neighboring rotating bar 122 ". The subassembly 130 is inserted into the space and kept vertical.

In the conventional pallet described above, when the subassembly 130 is loaded, the locking bar 140 is not automatically rotated, so that the subassembly 130 is automatically loaded using an automated machine such as a robot. Each time the sub assembly 130 is loaded, the operator must manually rotate the catching bar 140 to the inside of the body 100, and the loaded sub assembly 130 may be lifted from the body 100 again. The worker rotates the catching bar 140 one by one to rotate the catching bar 140 to the outside of the body 100. Therefore, in the process of loading and lifting the sub-assembly 130, a manual work is required by an operator, which hinders the automation of the entire process and has a problem in that work efficiency is lowered.

The present invention is to solve the problems of the prior art, it is possible to regulate the position of the sub-assembly when loading the sub-assembly on the pallet, the sub-assembly vertical with a latch that is restored to the initial position when removed The aim is to provide a stackable pallet to automate the loading and unloading process.

In order to achieve the above object, the present invention is a vertically stacked pallet capable of vertically loading a plurality of sub-assemblies such as a wide and thin door panel: a body consisting of a plurality of vertical bars and horizontal bars, A plurality of latches arranged at predetermined intervals on an upper portion of the horizontal bars facing each other, the latches being rotatably connected to the horizontal bars; The latch does not normally protrude into the body from the horizontal bar, but when the subassembly is loaded, the latch protrudes to the inside of the body to support the one end of the subassembly so that vertical loading of the subassembly is automatically performed. To do it.

In addition, the latch of the present invention to prevent the excessive rotation of the latch so that the support portion to support the sub-assembly in a certain position extending downwards from the opposite side to the support portion to be in contact with the horizontal bar in the sub-assembly loading position And the latch further includes an elastic member having one end connected to the latch and the other end connected to the horizontal bar to return the latch to the original position when the loaded sub assembly is removed. Can be regulated and rotated to its original position by the elastic member.

In addition, the latches of the present invention may be arranged at intervals where the neighboring latches may be pressed and rotated by the rotation when one latch is rotated, thereby continuously performing the loading process of the subassembly.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the vertically stacked pallet according to the present invention will be described in more detail. Figure 3 is a perspective view showing a vertically stacked pallet according to the present invention, Figure 4 is an exploded perspective view of the latch of the vertically stacked pallet according to the present invention, Figure 5 is a latch of the vertically stacked pallet according to the present invention. 6A to 6C are views showing the action of the vertically stacked pallet according to the present invention.

Referring to Figure 3, the vertically stacked pallet according to the present invention is a plurality of horizontal bars (10: 10a, 10b, 10c, ...; 10 ': 10a', 10b ', 10c', ... ) And a vertical bar (20: 20a, 20b, ...), and has a body (1) having a space in which the sub-assemblies 30 are vertically mounted. The lower portion of the body 1 is provided with a rolling means 40 to facilitate transport.

The vertically stacked pallet according to the present invention is provided with latches 50: 50a on the top of the horizontal bar 10 located in the middle of the horizontal bars of the body 1 and the horizontal bar 10 'on the opposite side thereof. , 50b, 50c, ...; 50 ': 50a', 50b ', 50c', ...) are provided in plurality at predetermined intervals. Since each latch has the same configuration, the same reference numerals are used for the same configuration for each latch for convenience of description below.

As shown in FIGS. 4 and 5, each of the latches 50 is integrally connected to the horizontal bar 10 and the rotating shaft 51, and the rotating shaft 51 is rotatable with respect to the horizontal bar 10. Is installed. In addition, each latch 50 does not normally protrude from the horizontal bar 10 on one side, but in the case of supporting the subassembly 30 by loading the supporting portion protruding from the horizontal bar 10 into the body 10. 52 is provided. The supporting part 52 has a straight surface 520 to which the subassembly 30 contacts when the subassembly 30 is loaded. In the latch 50, the supporting part 52 including the straight surface 520 does not normally protrude from the horizontal bar 10 (see latches 50c and 50c ′ of FIG. 5), but the subassembly 30 When loaded, the sub-assembly 30 is loaded to contact the straight surface 520 of the latch and rotates about the rotating shaft 51 so that the straight surface 520 is perpendicular to the side of the horizontal bar 10. (See latches 50a and 50a 'in Fig. 5).

In addition, the latch 50 is connected by the horizontal bar 10 and the elastic member (53). Specifically, the elastic member 53 is located below the horizontal bar 10 and one end is coupled to the extension member 55 extending in the horizontal direction from the rotary shaft 51 integrally coupled with the latch 50, The other end is coupled to the fixing member 56 extending downward from the horizontal bar (10). Therefore, when the latch 50 is rotated, the rotating shaft 51 is rotated, thereby the extension member 55 is rotated, the elastic member 53 is extended. Subsequently, the sub-assembly 30 is loaded so that the elastic member 53 is stretched to the maximum in a position where the straight surface 520 of the support part 52 maintains a state perpendicular to the horizontal bar 10. When the sub assembly 30 is lifted off and removed, the elastic member 53 rotates the latch 50 by the accumulated elastic force to return to the original position.

In addition, the latch 50 is provided with a catching protrusion 54 extending downwardly on the opposite side with respect to the support shaft 52 about the rotation shaft 51. The locking protrusion 54 is for restricting the rotation of the latch 50, and the latch 50 rotates so that the straight surface 520 of the support 52 is perpendicular to the horizontal bar 10. It will rotate and prevent further rotation. The locking protrusion 54 has a rod shape extending downward of the latch 50, and the horizontal bar 10 when the straight surface 520 of the base 52 is in a position perpendicular to the horizontal bar 10. ) Is installed at the position where it is caught (see latches 50a and 50a 'in FIG. 5).

In addition, as shown in FIG. 5, the distance between the latches 50 is opposite to the support part 52 when one latch 50 rotates, for example, when the latch of 50a of FIG. 5 rotates. It is preferable that the portions have an interval capable of pressing and rotating the neighboring latches 51b. This allows the neighboring latch 51b to rotate when the subassembly 30 is loaded into the latch 50a so that the supporting portion 52 protrudes to the inside of the body 1 to some extent (latch 50b and 50b '), by which the next subassembly 30 to be loaded later can be easily caught by the protruding support 52, thereby eliminating the need for the operator to do this manually, thereby automating the loading process. In addition, the latches 50a and 50a 'located at the innermost side of FIG. 5, which are the latches in which the subassembly 30 is first loaded, are always kept in a state in which the supporting portion 52 protrudes to some extent inside the body 1 ( Latch 50a of FIG. 6A), to facilitate loading of the original subassembly 30.

Hereinafter, the operation of the vertically stacked pallet according to the present invention will be described.

Referring to FIG. 6A, first, the innermost latch 50a is a position where the straight surface 520 of the support part 52 forms an acute angle with the horizontal bar 10 when the sub assembly 30 is not loaded. Is in. In this state, since the support part 52 slightly protrudes toward the inside of the body, the subassembly 30 can be pushed and loaded in the upper direction of FIG. 6A. In addition, since the supporting portion 52 of the other latches 50b, 50c, etc. does not protrude from the horizontal bar 10, a space for moving the subassembly 30 in the upper direction of FIG. 6A is secured inside the body. can do.

Thereafter, when the subassembly 30 is pushed upward and loaded as shown in FIG. 6B by using an automated machine such as a robot, the subassembly 30 is fitted at the support 52 of the latch 50a. It touches and pushes the support part 52 of the said latch 50a. Accordingly, the supporting part 52 rotates and the straight surface 520 of the supporting part 52 is parallel to the subassembly 30, that is, the straight surface 520 and the horizontal bar as shown in FIG. 6C. (10) is rotated to the vertical state. At this time, the elastic member 53 is elongated to accumulate elastic force, and the locking protrusion 54 is in contact with the horizontal bar 10 to prevent the latch 52a from rotating further, thereby subassembly. The loading position of (30) can be precisely regulated.

On the other hand, as shown in FIG. 6B, when the latch 50a starts to rotate, a portion located on the opposite side with respect to the base 52 and the rotation shaft 51 presses the latch 50b adjacent to the latch ( 50b) is rotated. After the sub assembly 30 is finally loaded, as shown in FIG. 6C, the supporting portion 52 of the latch 50b is maintained to protrude from the horizontal bar 10 to the inside of the body. Since the other sub-assembly 30 is loaded to be caught by the protruding support (52).

After loading the plurality of sub-assemblies in a manner described above with respect to the plurality of latches and transporting them to the work line, the sub-assembly is lifted, and the pressing force for pressing the latch 50 is removed and accumulated in the elastic member 53. The latch 50 rotates and is restored to its original position by the elastic force.

As described above, the pallet according to the present invention allows the latch to protrude into the inner side of the body when loading the subassembly and supports the subassembly in the loaded state in this state, and the latch again when the subassembly is removed. By allowing it to be positioned in its original position which does not protrude into the body, it is possible to automate the loading and removing process of the subassembly.

In addition, when one of the latches disposed at regular intervals on the horizontal bar rotates in a stacked state, the neighboring latches may rotate at a predetermined angle to protrude to the inside of the body to continuously load the sub-assemblies loaded thereafter. Can be done automatically.

Claims (3)

In a vertically stacked pallet that can vertically stack a plurality of subassemblies such as wide and thin door panels, A body consisting of a plurality of vertical bars and horizontal bars, Arranged at predetermined intervals on top of the horizontal bars facing each other of the horizontal bars, and provided with latches rotatably connected to the horizontal bar, The latch does not normally protrude to the inside of the body from the horizontal bar, but when the sub-assembly is mounted vertically stacked pallet provided with a support for supporting the end of the sub-assembly protrudes into the body by the rotation of the latch . The method of claim 1 The latch further includes a locking projection extending downward from the opposite side to the support portion to abut the horizontal bar in the sub-assembly loading position in order to prevent excessive rotation of the latch so that the support portion supports the sub assembly in a certain position, And the latch further includes an elastic member connected to the latch at one end thereof and connected to the horizontal bar at one end thereof to return the latch to the original position when the loaded subassembly is removed. The method according to claim 1 or 2, The latches are vertically stacked pallet, characterized in that when one latch is rotated, the adjacent latch is disposed at an interval to be pressed and rotated by the rotation.

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