JPS58197125A - Apparatus for unloading from pallet - Google Patents

Abstract

PURPOSE:To separate and deliver loads, by using a combination of an apparatus for transferring loads one by one from a pallet lift on which the loads are stacked to a delivering conveyor, an apparatus for separating the load on the conveyor laterally, stoppers for anchoring selectively the separated items of the load, and a delivering the controlling gate. CONSTITUTION:The front pallet (P) having the articles (B) loaded thereon placed on each storage conveyor 1 is delivered to an introducing conveyor 2 and is stopped over a lift table 5, and then by lifting the lift table 5 the top article (B) is elevated a little higher than the delivering conveyor (6). Then the transferring apparatus 11 is moved to the right, clamping plates 12 situated over the article (B) are lowered and clamp the article (B) from the four sides of the article (B), then the transferring apparatus 11 is moved to the left, and the first article (B) is transferred to the conveyor 6. Then the separating apparatus is actuated to move the article (B) outward so that the article (B) is abutted on the outer stopper and the article (B) is separated into eight items. The items are delivered downstream of a group of stoppers 41 and are stopped by the delivering gate 51, and items other than the front items are held from the top and the front items are separated from the rest, and delivered to the conveyor 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a pallet unloading device, and particularly to one that can reliably separate and carry out dry items.

[Technical background of the invention]

Conventional pallet unloading devices transfer items from each tier to an unloading conveyor one tier at a time.

[Problems with background technology]

Therefore, with conventional pallet unloading equipment, if a complicated stowage pattern is used, that is, a stowage pattern in which the items are mutually engaged, the items are transferred to the shore one stage at a time on the unloading conveyor, and then unloaded. In this case, the items sometimes overlapped or interlocked with each other.

[Purpose of the invention]

The present invention has been made in view of these points, and an object of the present invention is to carry out articles in a separated state.

[A4K of the Invention] The pallet unloading device of the present invention includes a lifting platform that supports and lowers a pallet loaded with items in several layers, a carry-out conveyor installed near the lifting platform, and the lifting platform. The above items are transferred between the conveyor and the conveyor.
a transfer device that holds each stage and transfers the items from the lifting platform to the carry-out conveyor; a separation device that is installed on the carry-out conveyor and horizontally separates the items for one stage on the carry-out conveyor; and a carry-out side of the carry-out conveyor. It is equipped with a plurality of stoppers extending from the end to selectively lock individual items on the carry-out conveyor, and a gate provided in front of the group of stoppers to control the carry-out of the articles from the carry-out conveyor. In this way, the items are separated from the delivery conveyor without colliding with each other or interlocking with each other.

[Embodiments of the invention]

Next, the pallet unloading device of the present invention will be specifically explained based on an embodiment shown in the drawings.

In Figure 1-1 and Figure 2, (1) is a storage conveyor in which a large number of conveyance rollers are arranged in parallel on shafts. In front of the storage conveyor (11), an inlet conveyor (2) each having a pair of endless conveyor chimin installed in parallel is installed in the same direction as the storage conveyor (1), and a part of each inlet conveyor (2) has a A pallet unloading conveyor (3), which has a pair of endless conveyor chains installed in parallel, is installed in a direction intersecting the loading conveyor (2), and a pallet stacker (3) is installed at the front of this pallet unloading conveyor (3). 4) is provided.

At the rear of each carrying-in conveyor (2), a lifting platform (5
), and in front of each elevating platform (5), there is one unloading conveyor located at approximately the same height as the elevated position of the elevating platform (5), and having a large number of conveying rollers arranged in parallel on the shaft. (6) is installed in the opposite direction to the pallet take-out conveyor (3), intersecting with the storage conveyor (1). is installed in the same direction as the storage conveyor fil and the input conveyor (2), intersecting with the output conveyor (6), and furthermore, between the end of the output conveyor (6) and the rear part of the roller conveyor, A roller conveyor (located in front of the force conveying rollers, a plurality of painless conveying V-belts (8
) has been constructed.

Further, a transfer device Uυ is movably provided between the raised position of the lifting platform (5) and the unloading conveyor. This transfer device αυ is, as shown in Figure 8, Four clamping plates α2 are arranged in a rectangular shape, which can move horizontally inwards and backwards, and upwardly and outwardly.
A guide rail (14) parallel to the carry-out conveyor (6) is provided above each lifting platform (5) via a pair of supports α3, and a guide intersects with this guide rail I on the lower side of this guide rail α4. The rail α is movable,
A transfer device 0υ is movably provided on the lower side of the guide rail α$.

Furthermore, a separating device υ as shown in Figure 4 and the opposite figure is provided at the rear of the carry-out conveyor (6).

This separation device? υ is a pair of shafts located below the center of the conveyance roller (with) of the unloading conveyor (6), which is parallel to the direction that intersects with the conveyance roller (2-) via a plurality of bearings (2). A shaft (c) is attached to the outside of this pair of shafts (c).
(c) is horizontally mounted parallel to the central pair of shafts via a plurality of bearings (e) and rotating arms (c) so as to be vertically movable;
A plurality of wheels (
) is installed in the gap between each conveyor roller (2), and the outer ends of the rotating arms (5) on both sides are moved up and down by air cylinders (2). K is designed to appear and retract from the gap between each conveyor roller onto the conveyance surface of the discharge conveyor (6), and a pair of sprocket wheels and an endless pair of shafts are respectively connected to the inner and central pair of shafts of the foreign bonds. Connected by a chain 6υ, the central pair of shafts (to) are connected by a pair of gears C32, and one of the central pair of shafts @ is connected to a pair of sprocket wheels (to) and an endless chain (to). is connected to the output shaft of the motor group, and by driving the motor output, each wheel (to) is rotated in the direction of the arrow shown in Figure 5. Bar-shaped stoppers (2) are provided above both conveyance rollers (C) in the 0υ portion of the separation device in a direction intersecting the conveyance rollers. In addition, in Figure 5, the east side is an endless drive belt for driving each conveyance roller (2) of the discharge conveyor (6).

Further, a plurality of stoppers υ, for example, five stoppers, are provided at the curved portion, that is, at the end of the carry-out side of the carry-out conveyor (6). As shown in Figure 6, each stopper υ is provided with a support frame (c) above the carry-out conveyor (6) via the side frames on both sides of the carry-out conveyor (6), and attached to this support frame Q3. An air cylinder ■ is provided, and the air cylinder with [
It is formed to be able to move up and down. Note that (c) is a slide rod attached to the stopper υ, and - is a sleeve that is slidably fitted to the slide rod and is attached to the support frame I.

Furthermore, a gate 6υ is provided in front of the group of stoppers 0υ. This gate 6υ is connected to the above-mentioned unloading conveyor (6υ).
) between the @SS of the endless conveyor belt (8) and the endless conveyor V-belt (8) group, the conveyor belt is formed so as to be able to appear and retract from below on these conveyance surfaces (
・Ru.

Note that the rotational speed of several conveyance rollers σ at the front end of the discharge conveyor (6) located behind the gate 6υ is set faster than each conveyance roller @ behind it.

The pallet unloading device of this embodiment has the above-mentioned configuration, so that the pallet unloading device can pick up box-shaped items with different loading patterns due to slight differences in shape and place them on the pallet.
F] Collect these items CB on the corresponding predetermined storage conveyor (1) in their loaded state.
) from the designated storage conveyor (1) as needed, unload it, and transfer it to the roller conveyor (7) K.
In order to explain this, we will first explain its mechanical operation, and then explain its functional operation using actual examples of various loading patterns. 5゜The front end pallet ■ of the multiple pallets loaded with items (6) on each storage conveyor (1),
A carry-in conveyor (2) K is carried in from the storage conveyor (11) and stopped above the lifting platform (6), and the following pallet [F] is stopped on the storage conveyor (1).

When unloading [, item ■, the item (8
) is supported along with the pallet [F] by the loading conveyor (2
), the uppermost item (8) on the pallet is raised to a position slightly above the conveyance surface of the unloading conveyor (6), and the guide rail α9 is raised. Move the transfer device Uυ to the right in Figure 1 along the guide rail (14) K as necessary.
8. Move the guide tray J & 115 upwards in Figure 1. From K, move the transfer device 0υ above the item (■), then lower each clamping plate I of the transfer device aυ, and then By advancing each clamping plate (12) inward, the uppermost item (8) is clamped from four sides, and then the transfer device 0υ is moved to the left in Fig. 171 along the guide rail a5, Furthermore, if necessary, the transfer device 0υ is moved to the rear of the unloading conveyor (6), that is, the separation device, by moving the guide rail downwardly as shown in FIG. By moving above Qυ and then retracting each clamping plate α2 of the transfer device αυ outward, one stage of items (8) is transferred to the carry-out conveyor (6), and each The clamping plate a is raised and retracted, and the separation device Qυ is activated, and the motor G of each wheel (to) is activated.
The items CB) on both sides of the loading pattern are moved outward by rotation by the air cylinder and raised by the air cylinder, and brought into contact with the stopper to remove one layer of items (6) from the crowded state to the central area and both sides thereof. The article (6) is then conveyed to the bottom of the group of stoppers ηυ by the carry-out conveyor (6) and stopped by the gate 61). Here, each stopper V is selectively moved by an air cylinder ) to hold the items (6) other than the item (81) at the front end from above from K, then lower the gate 6]ll, and carry out the following item (8) at the end by the unloading conveyor (61). Items (
The goods (8) are separated from the goods (8) and conveyed to the roller conveyor (η) via a group of V-belts (8), and are conveyed by the roller conveyor (η. 8) are sequentially separated in the front-back direction and transported to a roller conveyor (7).

Then, by repeating K of such operations, the palette [
F] When the items (5) on the top are unloaded and there are no more items (8) on the pallet (G), the lifting platform (5) is lowered and the empty (1) t<let ■ is transferred to the carrying conveyor (2). ) support on;
This empty pallet carry-in conveyor (2) carries out the front pallet carry-out conveyor (3), and then this pallet carry-out conveyor (3) carries out the pallet stacker (4).
The pallets [F] are transported in a stacked state by this pallet stacker (4).

Note that the intermediate section of the delivery conveyor (6) may function as a special section of the product skewer.

Next, a practical explanation of the operation will be given based on actual examples of four types of loading patterns.

The explanation will be made with reference to Figures 1 to 10, but in order to distinguish between the five stoppers υ, in Figure 1 γ to Figure 10, the code for each stopper is changed to (4).
11) (412) (413) (414) (41!S).

In the case of the loading pattern shown in Figure 1.7 (7);
The products (8) for each stage are separated in the lateral force direction by the separating device Qυ, and stopped by the gate 6υ at the front of the delivery conveyor (6), as shown in Figure 1 (a) *: or 4. Ru.

Then, by lowering the gate 6υ, the 51 country item (6) of l1iIs is carried out onto the roller conveyor (7)K. At this time, several conveyance rollers (2) at the front end of the unloading conveyor (6) rotate at high speed, so that the five items (8) in the wound area and the five items (8) in the rear part are separated. A gap is formed between them, and the gate 6υ rises into this gap, and the off-diagram (ri)′
*Thao) K shows 5K, and the 5 sardine items (8) in the rear are stopped.

Then, when there are no more items (8) in front of the gate 5υ, the gate 6υ is lowered and the five items (8) at the rear are carried out to the roller conveyor (η).

Figures 1 and 1-7 are explanatory diagrams for carrying out the upper several stages, and Figures 1 and 1-7 are explanatory diagrams for carrying out the lower several stages.

In the case of this loading pattern, as shown in Figure 1,
It is easy for the items (B,) (II,) in the center to become misaligned. Even if B,) is clamped on both front sides of the product-(B4)K, the separation device c2
Since the items are separated laterally by 1J, the items in the front center (B
) remaining in toto- [stored, items in the center of the back (B2)
will not be carried out together with the items (B4) on both front sides.

In addition, in the case of this loading pattern, the stopper C9 group does not operate.

,? In the case of the loading pattern shown in the example in Figure 8; one stage of items (8) is separated by separation device C! separated laterally by υ,
As shown in Figure 8 (a), it is stopped by the gate 6υ.

And here, each rear stopper (411) (412
) (413) descends to hold down a predetermined article (5), and then the gate 511 descends to hold down the article (51'l) in the front.
8) is carried out.

Next, the gate 5 is raised, and then the stoppers (412) (413) on both rear sides are raised, and the goods CB of the image department are raised.
) moves forward and reaches gate 6υ as shown in Figure 8(ri)K.
will be stopped by

And here, the stoppers on both sides of the front (414X415
) is lowered to hold down a predetermined item (8), and then the gate 6v is lowered and the two items (8) at the intermediate portion in the front and back direction are carried out.

Then, the gate constant rises, and then each stopper (41
1) (414) and (415) rise, and the five items (8) at the rear move forward to 1. 1 as shown in tstiili four
It is stopped by gate 6〃.

Then, gate 6υ descends and the five items at the rear (8)
is carried out.

In this loading pattern, the center items (!l, As shown, the items (B,) on both sides of the middle are easily misaligned;
If the item (B,) continues to move forward, it will be held down by the rear central stopper (411) and will not be carried out as expected, but it will be separated laterally by the separating device QDK, so it will be carried out as scheduled. It's like K.

In the case of the loading pattern shown in Figure 19 (7') VC; one stage of goods (6) is loaded at gate 6 as shown in Figure 9 (-rl).
]1 is stopped.

And here, each rear stopper (411) (412
) (413) descends to hold the specified item (8), and then the gate 611 descends to hold the 5 sea bream item (8) in the front.
is carried out.

Next, the gate 6υ rises, and then the rear stoppers (411, 412, and number 13) rise, and the product (8
) moves forward and is stopped by one gate 6υ as shown in Figure 9 (lead).

Then, the stopper (411) at the rear center and the stoppers (414, 415) on both front sides descend to hold down the predetermined item (6), and then the gate 61) descends @ the middle part in the rear direction. The three items (6) are carried out.

Next, the game toro υ rises, and then each stopper (
411) (414) (41δ) rises, and the rear five-steel item (5) moves forward and is stopped by the gate, as shown in Figure 4 of Figure 4.

Then, the gate 6υ descends and the 51-it item C at the rear
B) is carried out.

In addition, in the case of this loading pattern, the separation device (2υ) does not operate.

The loading pattern and case shown in Figure 10; one stage of goods CB) is separated laterally by a separating device r2υ,
As shown in Figure 110 (a), it is stopped by one gate 6υ.

And here, each rear stopper (4xx) (1g)
(413) descends and holds the specified item ■, then.

The gate 6υ is lowered and one part of the item 511 (6) is carried out.

Next, the gate E1ml rises, and then the stoppers (412) (413) on both rear sides rise, and the articles (6) on both sides move forward and are stopped by the gate 6υ, as shown in FIG. 1eAK.

And here, the stoppers on both sides of the front (414X415
) descends and holds the designated item island, then gate a
ll is lowered, and the two items CB) at the middle part in the front and back direction are carried out.

Then, gate 6]J rises, and then each stopper (
4] 1) (414) and (415) are raised, and the five items at the rear move forward and are stopped by the 1 gate 6υ as shown in Figure 10).

Then, the gate 6υ descends and
) is carried out.

This concludes the explanation of this embodiment, but when implementing it,
This includes, but is not limited to, storage conveyors (
1) The number of carry-in conveyors (2) and lifting platforms (5) may be one or as many as necessary, and the number of stoppers υ can also be increased or decreased as necessary. Further, the wheels of the separation device Qυ may be made of V-belts, and furthermore, the items 03) may be carried out in a state where they are completely separated one by one.

〔Effect of the invention〕

As mentioned above, according to the present invention, items loaded on pallets can be carried out in a state where they are separated from each other.
It is extremely effective because the items do not collide or interlock with each other, and it can accommodate various loading patterns depending on the arrangement of the stoppers.

France Brief explanation of the drawings ・□ The drawing shows a side view of the pallet unloading device of the present invention;
Figure 18 is a front view of the transfer equipment part, Figure 4 is a plan view of the separation device part, Figure 5 is a side view of the separation device part, and Figure 16 is a side view and off view of the main part. Figures 1 to 110 are explanatory diagrams of their functions.

(5)...lifting platform, (6)...unloading conveyor, 0υ...
Transfer device, (21) Φ dispute separation device, f411 (411
) (412X413) (414) (415)...stopper, constant...gate, [F]...l<let, (5)...
goods.

Claims (1)

[Claims] (Supporting I<left with 11 items loaded in multiple stages [
A lifting platform that goes up and down, a carry-out conveyor installed near the lift stand, and a movably installed device between the lift stand and the carry-out conveyor, which holds the items one by one and transfers them from the lift stand to the carry-out conveyor. a separating device installed on the unloading conveyor for laterally separating the items on the unloading conveyor; and a separating device installed on the unloading side end of the unloading conveyor for separating the individual items on the unloading conveyor. A pallet unloading device comprising: a plurality of stoppers for selectively locking the stoppers; and a gate provided in front of the stopper group for controlling the unloading of items from the unloading conveyor. (2) A claim characterized in that the elevating platforms are installed in groups of several units, and the transfer device transfers the items from the plurality of elevating platforms to the unloading conveyor one stage at a time.