JP2532320B2 - Work transfer structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer structure for picking a work in a pallet, and in particular, a work delivered together with a pallet from a three-dimensional automated warehouse or the like is individually picked from the pallet, conveyed, and lined. The present invention relates to a work transfer structure for supplying or conversely transferring a work from a line side to a pallet and placing the work.

[0002]

2. Description of the Related Art Conventionally, when a work is taken out from a pallet, there are various shapes of the work, and it is difficult to handle the work, and it is difficult for the worker to connect and match with other peripheral devices. Alternatively, they slung and were transported by crane.

However, since the cargo handling work is complicated and requires a relatively long working time, the line operation rate tends to decrease. In recent years, labor-saving and unmanned work has been desired, and automation of the entire factory including transportation is desired.
From this aspect as well, automation of the department that takes out the work from the pallet from a three-dimensional automated warehouse or the like without removing the work from the pallet and conveys it to each processing line has been a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art as described above, and the main purpose of the present invention is to remove a work piece, which has been palletized from a three-dimensional automatic warehouse, from this pallet. The purpose is to automate the work of taking out, conveying to each processing line, and supplying and the work of placing a work on the pallet from the outside.

According to the present invention, the above-mentioned object is to realize a pallet.
An empty space to support the bottom of the work placed on the
A gap is provided in the pallet, and only the work is made from the gap.
Work transfer structure for lifting, supporting, and transferring
The space above and below the pallet is provided on the bottom of the pallet.
The workpiece moving means comprises a directional through hole.
And a pedestal that supports the
And the work is supported by protruding from the through hole.
In a state where the work is
Means for horizontally conveying the space between the
Or a structure having means for supporting the work at
Note that the space is horizontal at the bottom surface of the work on the pallet.
The work moving means comprises a void extending to
Horizontal movement between internal and external pallet positions
A carriage and a pendant from the carriage and
The bottom surface of the work piece by supporting the bottom surface of the work piece
The arm and the pallet or the arm
And a structure having means for changing the height of either one of
It is achieved by.

[0006]

As described above, the work can be automatically taken out from the pallet by lifting and supporting the work from the outside by the work moving means from the space provided in the pallet and moving the work.

Here, in order to convey the work between the inner position and the outer position of the pallet, the work moving means projects the work from a vertical through hole provided on the lower surface of the pallet and supports the work. By having the conveying means that can be moved up and down with respect to the pedestal and the means for supporting the work at this external position, it is possible to easily and automatically transfer a relatively hard plate-like or box-like work.

Further, the work moving means is a carriage which can move horizontally between an inner position and an outer position of the pallet,
The height of at least one of the pallet and the arm that is suspended from the carriage and that can support the lower surface of the work by entering from the space that extends horizontally at the work lower surface position of the pallet is changed. By including the means, particularly when a plurality of arms are provided in series on the carriage, a long material such as a wire can be easily automatically transferred.

According to the above constructions, it is possible to take out the work from the pallet and place it on the pallet.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 shows a first embodiment to which the present invention is applied, and is a schematic configuration showing an arrangement of a three-dimensional automatic warehouse, a plurality of processing lines, and a work transfer structure provided between them. It is a figure. In FIG. 1, a publicly known stacker crane 2 is provided in a three-dimensional automatic warehouse 1 that stores a large number of pallets on which a work W is placed, which will be described later.
The work W is carried into the warehouse 1 together with the pallet from a line (not shown) or an external carrier. Further, a transfer device 4 is connected to the three-dimensional automated warehouse 1, and the transfer device 4 has a plurality of processing lines 5a, 5b, 5
connected to c.

The transfer device 4 carries a work W together with a pallet and can move on a rail 7 within a predetermined range.
Then, a delivery carriage 8 movable on the rail 9 so that only the work W is placed from the transfer carriage 6 and delivered to the conveyor devices 10a, 10b, 10c provided for each of the processing lines 5a, 5b, 5c by the procedure described later. It consists of and.

As shown in FIGS. 2 and 3, the transfer carriage 6 is adapted to move on a rail 7 with wheels 12, and the wheels 12 are drive motors 13 provided on the carriage 6.
Is driven via the sprocket 14, the chain 15 and the sprocket 16. Also,
The transfer carriage 6 includes a pallet support 18 on the upper side and a link 2
A table 19 supported by 0 for lifting and lowering, roller conveyors 21 and 22 as a pair of first rollers provided on the left and right sides of the table 19 in FIG. 19 ie roller conveyor 2
An elevating cylinder 25 for elevating the first and the second parts 22 is provided. Further, the roller conveyors 21 and 22 have sprocket wheels 27 and 2 with drive motors 23 and 24, respectively.
8, the chains 29, 30 and the sprockets 31, 32 are separately driven to rotate.

As shown in FIG. 2, the delivery cart 8 has a rail 9
Wheels 34 move above, and the wheels 34 are driven by the same drive motor (not shown) provided on the carriage 8 as described above. A pair of left and right roller conveyors 37 and 38 similar to the transfer carriage 6 are provided on the upper table 35 of the delivery carriage 8, and these drive motors 39 and 40 are the same as the roller conveyors 21 and 22 of the transfer carriage 6 described above. It is designed to be driven with. In addition, each conveyor device 10a, 10b, 1
0c is also provided with roller conveyors 42 and 43 similar to the above on its upper table 41, and its drive motor 44,
It is adapted to be driven by 45 in the same manner as described above.

On the other hand, the pallet 47 on which the work W is placed
Is provided with a plurality of vertical holes 48 through which the roller conveyors 21 and 22 can project upward with the pallet placed on the pedestal 18. This vertical hole 48
Has a size such that the work W does not fall off.

The procedure for picking only the work W from the pallet 47 and transporting it to the processing lines 5a, 5b, 5c will be described below with reference to FIGS. First, in FIG. 1, the stacker crane 2 takes out the work W together with the pallet 47 from a predetermined shelf of the three-dimensional automatic warehouse 1 and places it on the pallet cradle 18 of the transfer carriage 6 stopped near the warehouse 1. At this time, the table 19 of the transfer carriage 6 is in the lowered position so that it does not interfere with the forks of the stacker crane 2.

Then, the delivery vehicle 8 which drives the wheels 12 by the drive motor 13 and stops near the three-dimensional automatic warehouse 1
Move it to the position where it will be in series with. At this time, at the same time, the lifting cylinder 25 drives the table 19 via the link 20 to raise it. Then, the roller conveyors 21 and 22 project upward from the vertical holes 48 of the pallet 47 to lift and support the work W from the pallet 47 (FIGS. 4 and 5).

Next, each roller conveyor 2 on the side of the transfer carriage 6
1, 22 are driven by drive motors 23, 24, and each roller conveyor 37, 38 on the delivery cart 8 side is driven by the drive motor 3
Only the work W on the pallet 47 is moved from the transfer carriage 6 to the delivery carriage 8 by being driven by 9, 40.
At this time, it goes without saying that the drive motor 23 and the drive motor 39 are synchronized with each other, and the drive motor 24 and the drive motor 40 are synchronized with each other.

The delivery carriage 8 on which the work W is placed is a conveyor device 10a attached to each processing line 5a, 5b, 5c,
Move to a position in series with either 10b or 10c. Then, similarly to the above, the roller conveyors 37, 38 on the delivery carriage 8 side are driven by the drive motors 39, 40, and the roller conveyors 42, 43 on the conveyor devices 10a, 10b, 10c side are driven by the drive motors 44, 45. Thus, the work W is transferred from the delivery cart 8 to the conveyor device 10
a, 10b, 10c through the processing lines 5a, 5b, 5
Move to c and supply. Here, the left and right drive motors 3
9, 44 and the drive motors 40, 45 can be driven independently of each other, and as shown in FIG. 1, the left and right works W can be supplied to separate processing lines.

Although not shown in the figure, the transfer trolley 3 is also provided with the same transfer structure as described above, and the work can be carried into the three-dimensional automated warehouse 1 from the outside by the reverse procedure to the above.

FIGS. 6 to 9 show a second embodiment to which the present invention is applied. In this embodiment, a pallet on the side of a three-dimensional automatic warehouse accommodating a long work W and an external transfer carriage are provided. It is a principal part block diagram of the transfer structure of the workpiece W provided between them.
In this embodiment, a pallet receiving stand 51 is provided adjacent to a three-dimensional automated warehouse (not shown). The pallet receiving table 51 is supported by a guide rod 52 so as to be able to move up and down, and is vertically driven by an elevating cylinder 53.

At a position adjacent to the pallet tray 51,
A transfer carriage 54 that is movable on the rail 56 in the left-right direction in FIG. 8 is arranged. A cradle 55, which has a fence for preventing the work W from falling off, is mounted on both sides of the transfer carriage 54 and can be moved up and down by a lifter (not shown) so that the work W can be received and supported. Here, as shown in FIG. 6, the cradle 55 has a space 5 extending horizontally in the lower surface position of the work W with the work W placed thereon.
A plurality of spacers 57 on its upper surface so that
have.

Between the pallet receiving base 51 and the transfer carriage 54, there is provided a carriage 61 supported on a rail 60 of a frame 59 so as to be movable in the left and right directions in FIG. On the left and right sides of the carriage 61 in FIG. 8, three pairs of L-shaped arms 62 to 67 corresponding to each other are hung and supported at substantially equal intervals so as to be rotatable in a horizontal plane. Figure 7
As shown in FIG.
4 is driven by a drive cylinder 69 via a rod 70, and the left L-shaped arms 65 to 67 are driven by a drive cylinder 71.
The arm 62 through the rod 72 in the horizontal plane.
It is adapted to be driven in the direction opposite to 64. Here, each of the arms 62 to 67 has a closed position in which the horizontal portions of the arms 62 to 64 and the horizontal portions of the arms 65 to 67 face each other and an open position in which they are parallel to each other.

On the other hand, as shown in FIG. 9, the charging pallet 74 having fences on both sides for preventing the work W from falling is horizontally placed on the lower surface of the work W with the work W placed thereon. A plurality of spacers 76 are provided on the upper surface so that the extending void 75 is defined.

The procedure for unloading the work W placed on the full pallet 74 will be described below. First, the full pallet 74
Is conveyed to the pallet receiving table 51 by a stacker crane (not shown) or the like, and from the state where the pallet receiving table 51 is placed, the pallet receiving table 51 is raised by the elevating cylinder 53 to a height where the void 75 coincides with the arms 65 to 67. Then, the drive cylinders 69 and 71 rotate the arms 62 to 67 to the closed positions via the rods 70 and 72 to enter the gap 75 to support the lower surface of the work W.

Next, after lowering the pallet receiving base 51, the carriage 61 is moved to the upper part of the transfer carriage 54. In this state, the cradle 55 is raised and the work piece W is supported by the spacer 57 on the upper surface of the cradle 55.
67 is rotated to the open position and cradle 55 is lowered. At this time, in the state where the work W is supported by the cradle 55, the horizontal gap 58 is formed at the lower surface position of the work W, and the arms 62 to 67 can be easily rotated. Then, the transfer carriage 54 is moved to the next processing line or the like.

Needless to say, the work W can be carried into the warehouse side by the reverse procedure in this embodiment as well.

[0028]

As is apparent from the above description, according to the work transfer structure of the present invention, the work is lifted and supported from the outside by the work moving means from the gap provided in the pallet to move the work. By doing so, it is possible to automate the work of loading and unloading workpieces for each pallet from the three-dimensional automated warehouse and transferring them to each processing line without manual work by workers, thus saving labor and ensuring safe work. Can be secured and productivity can be improved. From the above, the effect of the present invention is great.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a three-dimensional automated warehouse showing a first embodiment to which the present invention is applied, a plurality of processing lines, and a work transfer structure provided between them.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a side view showing an operation procedure of the first embodiment together with FIG.

5 is a cross-sectional view taken along line VV of FIG.

FIG. 6 is a side view of essential parts of a work transfer structure showing a second embodiment to which the present invention is applied.

FIG. 7 is a plan view of FIG. 6;

8 is a sectional view taken along line VIII-VIII in FIG.

9 is a side view showing only the pallet of FIG. 8. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 3D automatic warehouse 2 Stacker crane 3 Storage trolley 4 Transfer device 5a, 5b, 5c Processing line 6 Transfer trolley 7 Rail 8 Delivery trolley 9 Rail 10a, 10b, 10c Conveyor device 12 Wheel 13 Drive motor 14 Sprocket 15 Chain 16 Sprocket 18 Pallet Cradle 19 Table 20 Link 21, 22 Roller conveyor 23, 24 Drive motor 25 Lifting cylinder 27, 28 Sprocket 29, 30 Chain 31, 32 Sprocket 34 Wheel 35 Table 37, 38 Roller conveyor 39, 40 Drive motor 41 Table 42, 43 Roller conveyors 44, 45 Drive motor 47 Pallet 48 Vertical hole 51 Pallet cradle 52 Guide rod 53 Elevating cylinder 54 Transfer cart 55 Cradle 56 Rail 57 Space 58 Gap 59 Frame 60 Rails 61 Rail 61 Carriage 62 to 67 L-shaped arm 69 Drive cylinder 70 Rod 71 Drive cylinder 72 Rod 74 Full pallet 75 Gap 76 Spacer W Work

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Hirano 46-59, Nakahara, Tobata-ku, Kitakyushu City Nippon Steel Corporation Machinery & Plant Division (56) Reference JP-A-3-73237 (JP, A) Actual Kaihei 1-177093 (JP, U)

Claims (2)

(57) [Claims] 1. A bottom surface of a work placed on a pallet
The pallet is provided with voids for external support.
And a work transfer structure for lifting and supporting only a work from the gap and transferring the work, wherein the gap is provided in a vertical direction on the bottom surface of the pallet.
A pedestal that is formed of a through hole and that the work moving means supports the pallet.
And the above-mentioned communication
The nuclear work is described above with the work protruding from the hole and supporting the work.
Horizontal transfer between internal and external pallet positions
Support means for supporting the work at the external position
And a means for performing the work transfer structure. 2. A bottom surface of a work placed on a pallet
The pallet is provided with voids for external support.
Then, only the work is lifted from the gap, supported, and transferred.
The structure for transferring a work, wherein the space is horizontal at the bottom surface of the work of the pallet.
The pallet is formed of a space extending in the
A carriage that can move horizontally to and from the position and a nuclear carrier.
Hang from the bottom of the pallet
Arm that can support the lower surface of the workpiece and the pallet and
And the height of at least one of the above arms
A structure for transferring a work, which has a changing means.
Build .