JPH0245222Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a pallet unloading device that sequentially pushes out containers from a pallet in which containers are stacked in multiple stages through partition plates. This invention relates to an improvement in a partition plate clamping device that clamps the partition plate so that the partition plate is not carried out together with the container during unloading.

``Prior Art'' Conventionally, a pallet unloading device includes a pallet in which containers are stacked in multiple stages via partition plates, a pushing mechanism that sequentially pushes the containers on the pallet onto a conveyor starting from the top stage, and a pushing mechanism. A mechanism is known that includes a partition plate clamping device that clamps the rear side of the partition plate in the container extrusion direction when the mechanism pushes out the container.

The above-mentioned partition plate clamping device clamps the rear side of the container in the extrusion direction to prevent the partition plate from being carried out together with the container when pushing out the container on the partition plate. The device generally grips the partition plate with a clamper.

``Problem to be solved by the invention'' However, when the above-mentioned clamper is used to grip the partition plate, the gripping part of the partition plate by the clamper is easily damaged, making it difficult to reuse the partition plate many times. was. Furthermore, when the clamper grips the partition plate, there is a risk that the clamper will come into contact with the container and damage the container.

"Means for Solving the Problem" In view of such circumstances, the present invention is designed to press the partition plate clamping device downward at a predetermined position on the rear side in the container extrusion direction of the partition plate on which the uppermost container is placed. ,
A clamping member that clamps the partition plate between the containers one level below the top level, a moving frame that is movable forward and backward in the pushing direction of the containers, and a moving frame that is integrally advanced to a predetermined position. and a press plate that presses and regulates the rear side position in the extrusion direction of the container one step below the top step to a predetermined position, and forms a space in a portion where the holding member is pressed. be.

"Function" According to such a configuration, the holding member simply presses the partition plate downward, so that damage to the pressing part of the partition plate can be prevented compared to the past, and it can be reused many times. Since the container one step below the top stage that holds the partition plate together with the holding member has its rear position in the extrusion direction restricted to a predetermined position by the pressing plate, the partition plate cannot be held by the holding member. It will be possible to make it stable and reliable.

Furthermore, in addition to this, the pressing plate forms a space in the part where the clamping member is pressed next time when the container one step below is pressed.
When the container one step below becomes the top step, the holding member can be positioned within the space without colliding with the container. The operating direction of the clamping member is vertical, whereas the operating direction of the pressing plate is horizontal, so it is better to press and move the container with the pressing plate than to move the container with the clamping member. This makes it possible to reduce the risk of damaging the container.

``Example'' An example in which the present invention is applied to a high-floor pallet unloading device will be described below. In FIG. 1, 1 is a partition plate 3a, 3b...
..., 3n, containers stacked in multiple stages, 4 is a lifting frame for raising and lowering the pallets 2, and when the pallet 2 is supplied onto the lifting frame 4 by a transport mechanism (not shown), the lifting frame 4 The pallets 2 are separated by mutually adjacent partition plates 3 by a lifting mechanism (not shown).
It is designed to be intermittently raised by intervals of a, 3b, . . . , 3n.

Then, the pallet 2 is lifted up and the uppermost partition plate 3a is attached to the spanning plate 5 fixed to the machine frame (not shown).
When the partition plate holding device 10 is stopped at the same height as the top partition plate 3a, as will be described in detail later, the partition plate holding device 10
in the container extrusion direction, that is, the arrow X in FIG.
The rear side is held in the direction,
In this state, the push-out mechanism 6 provided on the machine frame moves to the left and pushes out the container 1 on the uppermost partition plate 3a via the spanning plate 5 onto the conveyor 7.

When the push-out mechanism 6 that pushed out the top container 1 returns to its original position and the partition plate clamping device 10 releases the top partition plate 3a, the lifting frame 4 is raised to move the next partition plate 3b. is raised to the same height as the gangboard 5. When this state is reached, the partition plate 3a at the top tier is removed from above the container 1 that has newly become the top tier by a partition plate discharging device (not shown), and on the other hand, the partition plate 3a on which the container 1 at the top tier is placed is removed. 3b is held by the partition plate holding device 10.

Containers 1 stacked on pallet 2 in this way
When the pallets 2 are emptied by being sequentially carried out from above the partition plates 3a, 3b, . Thereafter, the empty pallet 2 is carried out from above the lifting frame 4 by a transport mechanism (not shown), and
At the same time, a new pallet 2 on which a large number of containers 1 are stacked is supplied onto the lifting frame 4.

The partition plate clamping device 10 includes a movable frame 11 that is movable forward and backward in the extrusion direction of the container, a press plate 12 that is integrally provided with the movable frame 11 and regulates the pressure on the container 1, and each partition plate 3a. ,3b,...,
3n and a clamping member 13 that clamps the container 1 and the container 1, respectively.

That is, in FIGS. 1 and 2, the partition plate clamping device 10, which is disposed on the rear side of the pallet 2 in the container extrusion direction, is connected to the fixed frame 14.
is equipped with a pair of guide shafts 15 attached along the container extrusion direction, and this pair of guide shafts 1
The movable frame 11 is slidably attached to the frame 5.
A bracket 16 is installed on the bottom surface of this moving frame 11.
is fixed, and an air cylinder 17 is installed between this bracket 16 and the frame 14,
This air cylinder 17 allows the moving frame 11 to be moved back and forth along the container extrusion direction.

The pressing plate 12 is attached to the tip, that is, the left end of the moving frame 11, and when the moving frame 11 moves forward, this pressing plate 12 presses the container 1 one step below the top step, and pushes the container 1 in the pushing direction. The rear position can be aligned with the forward end position of the pressing plate 12.

A support shaft 18 is arranged on the upper surface of the moving frame 11 in a direction perpendicular to the extrusion direction of the container and is rotatably supported, and a pair of clamping members 13 are attached to both ends of the support shaft 18. There is. The tips of the pair of clamping members 13 are connected to each partition plate 3a, 3b, ..., 3.
They are each formed into a plate shape so as to be in contact with the surface of n with a required contact area.

An arm 19 is attached to the center of the support shaft 18 on the side opposite to the holding member 13, and is made of a cylindrical bellows sealed between the right end of the arm 19 and the upper surface of the moving frame 11. An air cylinder 20 is provided. Compressed air can be supplied into the air cylinder 20 from a compressed air source (not shown), and when the compressed air is supplied, the bellows are expanded in the axial direction and passed through the arm 19 to the clamping member 13. can be rotated counterclockwise in FIG. 1, and on the other hand, when the compressed air is discharged, the bellows can be contracted by its own elasticity and the holding member 13 can be rotated clockwise in FIG. That's what I do. When the clamping members 13 are rotated counterclockwise, the tips of each clamping member 13 project forward by a required amount from above the pressing plate 12.

Furthermore, a protrusion 21 of a desired shape is provided on the container pressing surface of the press plate 12, and the protrusion 21 removes the container 1 from the area where the tip of the clamping member 13 presses the partition plate in advance to create a space in that area. Then, when the container 1 reaches the top level,
The holding member 13 and the container 1 are prevented from coming into contact with each other.

In the above configuration, in the non-operating state, the movable frame 11 is located at the right end in FIG. is located at the lowest end, and therefore, the tips of both clamping members 13 are directed diagonally upward, and the tips are located at a position retreated to the right side of the pressing plate 12.

In this state, as mentioned above, pallet 2
When the uppermost partition plate 3a is raised and stopped at the same height as the span plate 5, the air cylinder 17 is activated and the movable frame 11 is advanced leftward to a required position. Then, the pressing plate 12 provided on this moving frame 11 comes into contact with the containers 1 stacked one level below the top level and advances them to the above-mentioned required position,
As a result, the rear side position of the container 1 in the extrusion direction is pressed and regulated to a predetermined position, and a space is formed at the portion where the holding member 13 is pressed next time by the protruding portion 21.

In this state, compressed air is fed into the air cylinder 20, the air cylinder 20 expands, and the holding member 13 is rotated counterclockwise in FIG. Press it against the top surface of the As a result, the partition plate 3a on which the topmost container 1 is placed is held between the clamping member 13 and the container 1 one step below the partition plate 3a, so that the partition plate 3a is substantially unable to move.

When this state is reached, the extrusion mechanism 6 moves to the left and the uppermost partition plate 3 is moved as described above.
The container 1 on top a is pushed out onto the conveyor 7 via the spanning plate 5. And extrusion mechanism 6
When the container 1 in the uppermost stage is pushed out, the pushing mechanism 6 is retracted to the original retracted position, and the air in the air cylinder 20 is discharged and the holding member 1 is pushed out.
3 in the clockwise direction in FIG. 1, thereby releasing the grip on the partition plate 3a, and at the same time, the air cylinder 17 causes the movable frame 11 to retreat to its original retreat position.

After that, the elevator frame 4 is raised to the next partition plate 3b.
When the partition plate 3a is raised to the same height as the ganging board 5, the partition plate 3a on the uppermost stage is removed from above the container 1 which has newly become the uppermost stage by a partition plate discharging device (not shown), and on the other hand, the container on the uppermost stage The partition plate 3b on which 1 is placed is held by the partition plate holding device 10 in the same manner as described above.

At this time, the holding member 13 is attached to the pressing plate 12.
Since it is located within the space formed by the protrusion 21 and presses the partition plate 3b,
There is no collision with the container 1, and the same operation is repeated thereafter.

"Effect of the invention" As described above, according to the invention, when pushing out a container from above the partition plate, the position of the container below the partition plate can be regulated, and the position between the regulated container and the clamping member can be controlled. Since the partition plate can be held between the clamps, the partition plate can be held securely, and the partition plate can be reused many times compared to the conventional device that uses clampers to hold the partition plate. You can get the effect of

In addition to this, a space can be formed in the area where the clamping member is pressed when the pressing plate restricts pressure on the container, thereby preventing collision between the clamping member and the container and damaging the container. The effect is that the risk can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a plan view thereof. 1...Container, 2...Pallet, 3a, 3b, 3
n... Partition plate, 4... Elevating frame, 6... Extrusion mechanism, 7... Transfer conveyor, 10... Partition plate clamping device, 11... Moving frame, 12... Pressing plate, 13...
Holding member, 21... protrusion.

Claims (1)

[Claim for Utility Model Registration] A pallet in which containers are stacked in multiple stages via partition plates, a pushing mechanism that pushes the containers on the pallet onto a conveyor sequentially from the top stage, and a pushing mechanism that pushes the containers. In a pallet unloading device comprising a partition plate clamping device that clamps the rear side of the partition plate in the container extrusion direction when unloading, the partition plate clamping device is configured to push out the containers of the partition plate on which the topmost container is placed. a clamping member that presses downward at a required position on the rear side in the direction and clamps the partition plate between the containers one level below the top level, and a movable frame that is movable forward and backward in the extrusion direction of the containers; It is advanced together with this moving frame to a predetermined position, presses and restricts the rear side position in the extrusion direction of the container one step below the top step to that predetermined position, and forms a space in the portion where the holding member is pressed. 1. A partition plate clamping device for a pallet unloading device, comprising: a pressing plate.