JPS5823786Y2 - Pallet unloading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet unloading and unloading device, and relates to a structure for simultaneously removing a partition plate and a top board at the top of a stack of articles.

Conventionally, in pallets where a large number of articles such as can bodies are stacked side by side in multiple tiers with partition plates interposed between them, there is a partition plate on the top surface of the top tier of articles, and a partition plate is placed on top of the partition plate. A top board is placed thereon, and when unloading or unloading, the top board is removed manually or by mechanical means, and then the topmost partition plate is moved.

This configuration has the disadvantage that work efficiency is low because the partition plate is moved after the top board is removed.

Therefore, it is possible to transfer the topmost partition plate at the same time as the top board, but the partition plate bends more easily than the top board, so if the partition plate is superimposed on the bottom of the top board and transferred to the stacking position, the partition plate will bend. When being fed out to the stacking position, the partition plates tend to get caught, which may result in the partition plates not being fed out smoothly.

The present invention was developed in view of the above points, and the uppermost partition plate and the top board are simultaneously sucked by a vacuum suction device, and the partition plate is transferred to the delivery device in a superposed state below the top board. In addition to improving work efficiency, a blocking device installed in the middle of the feeding device prevents the movement of only the top board, so that the partition plate is sent out first, so that the partition plate below the top board bends and gets caught. To provide a pallet unloading device which eliminates this problem and can reliably send out partition plates.

Next, the configuration of the embodiment of the present invention is shown in the attached drawings 1 to 8.
The diagram will be explained.

In FIG. 1, A is a stack of articles, in which a plurality of articles a are arranged side by side on a pallet 1 and stacked in multiple tiers with partition plates 2 in between. 2 and the cavity 3a
A frame-shaped top board 3 is placed thereon.

This stack of articles A is disposed at a loading/unloading position of a conveyor (not shown), and is supported on a lifting device B which is raised sequentially by the height of the article a.

Next, the vacuum suction device 4 will be explained.

The stack of articles A is moved from the first frame 5 installed on one side of the unloading position of the conveyor for the stack of articles A to the second frame 6 that projects above the stack of articles A placed on the lifting device B. A pair of guide rails 7 located above and in a direction perpendicular to the transport direction are constructed, and each guide rail 7
The rollers 9 of the pair of racks 8 facing upward are engaged with the guide rails 7.

A pinion 10 meshed with the rank 8 is mounted on a rotating shaft 12 of an electric motor 11 fixed on the second frame 6.

Further, a sliding frame 13 is constructed and fixed between a pair of racks 8, and a pair of upper and lower rollers 14, 14, which are pivoted on both sides of this sliding frame 13, are engaged with the upper and lower portions of the guide rail 7.

A tube support frame 16 is arranged in a grid pattern on the lower surface of the sliding frame 13, and a support piece 17 supports the center position of the tube support frame 16.
is provided to protrude upward, and this support piece 17 is inserted into the groove 19 of the guide body 18 provided on the sliding frame 13, and a projecting piece 53 is fixed to this support piece 17 and protrudes from the guide body 18. is connected to and supported by the piston rod 21 of the piston cylinder 20, which is supported in parallel to the groove 19 on a support 57 provided on the sliding frame 13.

Furthermore, intake pipes 22 are installed vertically at appropriate intervals on the pipe support frame 16.
An elastic suction head 2 is attached to the lower end of this intake pipe 22.
3 are connected to each other, and the upper end thereof is connected to a vacuum pump 24 which is attached to the first frame 5 and serves as a suction source.

Moreover, the topmost article a of the article stack A is placed at the tip of the sliding frame 13.
An extrusion frame 26 is provided for transferring the group in a direction perpendicular to the conveyance direction onto a discharge conveyor 25 provided facing one side of the extruded article stack A.

Next, the sending device 27 will be explained.

Below the position of the sliding frame 13 of the first frame 5 when the sliding frame 13 is retracted, a plurality of feed belts 28 are stretched in a direction perpendicular to the direction of movement of the sliding frame 13.
One drive wheel 29 is fixedly mounted on a rotating shaft 31 mounted between the first frames 5, and the rotating shaft 31 is driven by an electric motor 32 attached to the first frame 5 and a belt 33. It is designed to be linked.

Further, each of the other drive wheels 30V-1 is mounted on a bearing fitting 35 which is fixed to the first frame 5 with a bolt 34 so as to be adjustable in forward and backward movement.

Further, the lower surface of each feed belt 28 is supported by a belt receiver 36, and the belt receiver 36 is supported by a downward U-shaped support frame 37, which supports the horizontal beam 3 installed on the first frame 5.
It is supported by 8.

Next, the blocking device 39 will be explained.

An arm frame 40 is provided so as to protrude from above the first frame 5 on the sending end side of the feed belt 28, and a projecting piece 41 that is provided to protrude downward from the tip of the arm frame 40 is provided. Support shaft 4
A blocking piece 43 rotatably pivoted at 2 is vertically disposed downward, and the gap between the lower end surface of this blocking piece 43 and the upper surface of the feed belt 28 is wider than the thickness of the partition plate 2 and wider than the thickness of the top board 3. The height of the blocking piece 43 when vertically installed is determined so that the blocking piece 43 is also narrow.

Furthermore, the tip of a piston rod 45, which is fitted into a piston cylinder 44 whose one end is pivoted midway through the arm frame 40, is pivoted midway through the blocking piece 43.

Further, at the tip of an arm piece 46 whose one end is pivoted to the base of the arm frame 40, there is a presser roller 47 that comes into contact with the tip of each of the feed belts 28.
is mounted on a shaft.

Reference numeral 48 denotes a presser device, and one end of a presser arm 50 with its tip facing the corner of the upper surface of the article stack A and bent in the middle is pivoted to a bearing body 49 protruding from the second frame 6. Presser arm 50
A friction plate 52 is fixed to the lower surface of a plate-like body 51 formed at the tip of
A piston cylinder 55 into which the piston rod 54 is fitted is pivotally connected to a bearing body 56 that projects from the second frame 6.

Next, the operation of the above embodiment will be explained.

When the article stack A on the pallet 1 is conveyed by the conveyor and reaches the unloading position of the conveyor, the lifting device B provided at the unloading position rises and lifts the pallet 1 from above the conveyor.

Next, the electric motor 11 is activated to rotate the pinion 10, and as shown in FIG. The suction device 4 made up of the pipe support frame 16 and the intake pipe 22 is advanced above the stacked body A.

Next, the piston rod 21 that supported the tube support frame 16 advances and lowers the tube support frame 16, and the suction head 23 at the lower end of the intake tube 22 is attached to the upper surface of the uppermost partition plate 2 in the cavity 3a of the top board 3. The uppermost partition plate 2 is attracted to the suction head 23 by suction by the vacuum pump 24.

Next, when the IT piston rod 21 in the intake state is retreated, the top board 3 is supported on the upper surface of the uppermost partition plate 2 and is pulled up by one stroke attracted to the intake pipe 22.

Next, when the pinion 10 is reversed, the rack 8 retreats, and along with this, the suction device 4 that sucked the partition plate 2 on which the top board 3 is placed also retreats, and the delivery device 27 is moved from above the stacked body A.
Shifts upwards.

Next, when the intake air from the intake source to the intake pipe 22 is released, the suction-supported partition plate 2 falls onto the 11 feed belt 28 on which the top board 3 is placed.

Next, when the electric motor 32 of the delivery device 27 is activated to rotate the drive wheel 29 and the interlocking shaft 30, the top board 3 is supported on the upper surface of the partition plate 2 on the feed belt 28! 1 In Figure 4, it is advanced to the left.

At this time, the blocking piece 43 of the blocking device 39 is suspended from the arm frame 40, and the lower end surface of the blocking piece 43 is at a position lower than the height of the top board 3 and higher than the height of the partition plate 2. .

Therefore, the top board 3 advancing together with the partition plate 2 reaches the position of the blocking piece 43 and is blocked from advancing, and only the partition plate 2 is sent out from between the presser roller 47 at the tip and the feed belt 28.

When the release of the partition plate 2 is detected, the piston rod 45 of the blocking device 39 advances, and the vertically installed blocking piece 43 is moved to the support shaft 4.
2 as a fulcrum, and the blocking piece 43 rotates upward, so that the top board 3 is unblocked, and the top board 3 is fed out from the tip of the feeding device 27.

When the ejection of the top board 3 is detected, the piston rod 45 retreats and the blocking piece 43 returns to its vertical position again.

Next, the pallet 1 supporting the laminate A is raised by the lifting device B, and the partition plate 2 supporting the uppermost article a becomes at the same height as the adjacent unloading conveyor 25.

Next, when the suction device 4 is advanced above the stacked body A in the same manner as before, the extrusion frame 26 provided at the tip of the sliding frame 13
The group A of articles on the first stage on the partition plate 2 is pushed out and transferred onto the carry-out conveyor 25.

At this time, the piston rod 54 of the holding device 48 is advanced so that the partition plate 2 does not move due to the extrusion of the article a,
The presser arm 50 is rotated to bring the friction plate 52 at the tip into contact with the corner of the partition plate 2.

After pushing out the first stage article a, the piston rod 54 of the holding device 48 is moved backward, and after pulling up the friction plate 52, the intake pipe 22 of the upper intake device 4 is lowered to suck the partition plate 2, and the partition plate 2 onto the sending device 27.

Thereafter, in the same manner as the previous time, the partition plate 2 is sent out, the stacked body A is raised, the article a is pushed out, the partition plate 2 of the next stage is sucked and removed, and the unloading on the pallet 1 is completed.

According to the present invention, a vacuum suction device is provided that advances and retreats upward from one side of a stack of articles loaded on a pallet, and an article extrusion frame is provided that advances and retreats as the vacuum suction device advances and retreats. At the same time as the vacuum suction device advances above the stack, the article extrusion frame advances and can push out the articles in the stack.Furthermore, the vacuum suction device adsorbs the topmost partition plate of the stack, thereby removing the partition plate. The top board placed on top can be pulled up at the same time, and since a delivery device is provided below when the vacuum suction device is retracted, once the vacuum suction device is retracted and the suction is released, the partition plate and the top board placed on it can be lifted up. The top board can be dropped onto the delivery device and sent out, and furthermore, a height-adjustable blocking device is provided in the middle of the delivery device to prevent the top board from being sent out and to allow the partition plate to be sent out. Therefore, by adjusting the height of the blocking device, the top board and the partition plate can be sent out separately, and the partition plate, which is easily bent and deformed, can be sent out smoothly.

In addition, since the top board and the partition plate can be removed from the stack at the same time, unloading operations can be quickly and easily made, and work efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a stack of articles, FIG. 2 is a front view of a device showing an example of implementation of the present invention, FIG. 3 is a plan view of the same, FIG. 4 is a side view of the same delivery device, and FIG. The figure is a plan view of the same as above, No. 6
The figure is an enlarged sectional view of the intake pipe support section, FIG. 7 is a side view of the holding device section, and FIG. 8 is a plan view of the same. A... Goods stack, B... Lifting device,
a... Goods, 1... Pallet, 2...
...Partition board, 3...Top board, 4...
... Vacuum suction device, 23 ... Suction head, 26
...article extrusion frame, 27... delivery device,
39... Blocking device.

Claims (1)

[Scope of utility model registration request] A stack of articles is stacked on a pallet in multiple stages via partition plates, and a frame-shaped top board is placed on top of the uppermost article via the partition plate, and is supported by a lifting device. A suction head that is movable up and down and moves forward and backward from one side of the article position in the upper layer of the article stack toward the top of the stack, in a pallet load unloading device that unloads the load one by one from the upper layer by lifting. a vacuum suction device having a vacuum suction device, an article extrusion frame that moves forward and backward in accordance with the advance and retreat of the vacuum suction device, and a top board provided below the retracted position of the vacuum suction device to feed a top board and a partition plate one distance. A delivery device and an IL placed in the middle of the delivery device to prevent delivery of the top board.
A pallet unloading device comprising: (a) a freely advancing blocking device that enables the partition plate to be sent out;