JPH0272019A - Accumulation and discharge device for transported goods - Google Patents

Abstract

PURPOSE:To discharge objects in correct arrangement by a method wherein when objects carried by a conveyer are pushed out by a pusher and arranged by a specified number on an accumulation table, the accumulation table proceeds to a specified position and supports the rear of the objects with a stopper. CONSTITUTION:A pusher 3 is driven by a rodless cylinder 12, and pushes out objects A on a conveyer onto a fixed table 4 and continues to push the rear end of the objects beyond the fixed table 4 until the front end of the objects is stopped by a stopper 7. An accumulation table 2 is supported by a pair of guide levers 13 and driven back and forth by a rodless cylinder 14. The traveling distance of the table 2 is between a position where the rear end of the accumulation table is approaching the fixing table and a position where the objects collected on the table reach a specified discharge position, although the accumulation table during its regression can oscillate back and forth in a range that the discharged objects may not be smashed. A stopper 15 supports regression of the objects when the collection table has moved forward.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is directed to stacking conveyed articles transported by a conveyor into a fixed number of article groups and discharging them at a predetermined position in an accumulated state for carton packaging, for example. This relates to a device for

More specifically, even if the conveyed articles have different cross-sectional shapes at the upper and lower ends, such as an inverted truncated pyramid shape, making it difficult to maintain alignment, the conveyed articles can be discharged in an accurate alignment. This invention relates to an accumulating and discharging device that can.

[Conventional technology]

Collect a certain number of items transported by a conveyor,
When discharging, an accumulation table is placed on the side of the conveyor, and a pusher placed on the opposite side of the conveyor pushes out the articles on the conveyor to form a group of a certain number of articles on the accumulation table, and the whole is transferred to another pusher. It is common to push out with +.

Another known method is to move the entire table to a predetermined position, push it out with a pusher, and then pull the table back.

[Problem to be solved by the invention]

Even a conventional device may be able to operate without problems if the conveyed article is a rectangular parallelepiped, which has a constant upper and lower member shape.

However, when the cross-sectional shapes of the upper and lower parts are different, such as an inverted truncated conical shape, especially when the cross-sectional area of the lower end is smaller than the cross-sectional area of the upper part, the article may fall over or the stacked arrangement may be disturbed. It ends up.

This is the same even when pushing out with a pusher, or when the table is moved to a predetermined position and the rear end of the group of articles is supported by a stopper, and then the table is retreated.

That is, as shown in FIG. 5 (a+), when the rear end of the group of articles is supported by the stopper B and the table C is retreated, there is a gap between the articles A and A at the lower end of the article that is in contact with the table C. When the article is ejected in this state, the article is pulled up by Fg! friction resistance on table 7, and the article at the rear is tilted considerably. A gap is created between A and A, and for example, the product protrudes from the normal position of carton blank D. In order to return the protruding product to the normal position of carton blank 1), it is also possible to push it back with a guide member or the like. However, in this case, the upper part with a wide cross section is pushed and the article is tilted.

If the number of items packed in a carton is small, there will be no problem as the inclination will be small and the carton will correct itself naturally.
If a large number of articles are arranged in rows or more, the inclination will gradually increase and will not be corrected naturally, making it unacceptable.

In view of these points, the present invention provides a conveyance system that is discharged in a relatively correct arrangement even when the cross-sectional shape of the lower end is smaller than that of the upper part, and moreover, many articles are handled as a group. This is a device for accumulating and discharging goods.

[Means to solve the problem]

A collection table (2) is installed on the side of the conveyor (1) for transporting articles
], the pusher (3) pushes out the article A sent by the transport conveyor fll, and the stacking table (
2) A predetermined array of articles is stacked on top.

The stacking table (2) is advanced to a predetermined position, and the back of the group of articles is supported by the stopper α9, and then the stacking table (2) is moved back to discharge the group of articles. ) shall advance and retreat, that is, swing, within one pitch of the article arrangement during the retreat.

In addition, a stopper α is provided to stop the front end of the article group at a predetermined position when discharging the article group, and a cover member (6) is provided above the stacking table (2) to prevent the articles from floating or tilting. Providing a fixed table (4) between the accumulating table and the transport conveyor is an effective means for carrying out the present invention.

[For production]

Article A sent by the conveyor is sent to the pusher (3)
When a predetermined number of articles are arranged on the accumulating table (2), the accumulating table moves forward to a predetermined position, and the rear of the group of articles is supported by a stopper a.

Thereafter, when the accumulating table (2) is moved backward, the leading article is discharged immediately after starting, and due to the inertia of its own weight, it is discharged in a more or less upright state. As a result of the lower end of the next article being pulled rearward, it is discharged in a slightly tilted state compared to the previous article.

If the accumulation table continues to move backward, the slope will be added sequentially, but in the present invention, the accumulation table (
2) goes back a little in the opposite direction. Then, the accumulation table (2)
The tip pushes the lower end of the article just before being ejected in a slightly slanted state, correcting it to a more or less upright posture.

Thereafter, when the accumulating table starts moving backward again, the next article is ejected in the same way as the previous one. In this way, when the entire group of articles is ejected, the individual articles may be at least tolerably tilted to some extent;
The entire group of articles is discharged from the stacking table while maintaining approximately correct posture and arrangement.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows the entire stacking and discharging device for stacking a fixed number of puncture containers filled with food by a filling machine and sent by a conveyor (1), 12 in the drawing, and supplying them onto a carton blank D. FIG. The pack container, that is, the article A, has an upper half having a circular cross-sectional shape, for example.
The shapes of the upper and lower parts are different, such that the lower half is a rectangle with a small area.

A collection table (2) is arranged on the side of the transport conveyor +1) in a direction perpendicular to the transport conveyor, and a pusher (3) for pushing out the articles A on the conveyor onto the collection table is arranged on the opposite side. It is set up.

A fixed table (4) is arranged between the conveyor (1) and the accumulation table (2). The fixed table (4) has a length corresponding to one pitch when the articles A are stacked, and the stacking table (2) is made slightly larger to accommodate various stacking numbers. However, fixed table (4
) can be omitted, but conversely, if the article arrangement is 2 pitches or 3 pitches,
It can also be made larger by the pitch. As can be seen from FIG. 3, the surfaces of the fixing table (4) and the accumulating table (2) are provided with protrusions (5) that serve as guides so that the articles are pushed out straight.

A slatted cover member (6) that can cover at least a portion of the upper surface of the article is provided above the fixed table (4) and the accumulation table (2). This cover member (6) is placed with a slight gap between it and the top surface of the articles to prevent the articles being pushed over the fixed table or the accumulation table from falling over, but the cover member (6) is placed at the front end of the article to prevent the articles from falling over. In order to lock the front end of the group of articles, a stopper (η) with an inverted cross section is fixed. However, the stopper (
7) is a hindrance when a group of articles is discharged from the collection table (2), so the cover member (6) as a whole should be able to be raised and lowered. In other words, the base end of the support rod (8) that fixes the cover member (6) is pivoted α1 on a part of the main body frame (9), and the middle portion of the support rod (8) is driven up and down by the cylinder αυ. let

The pusher (3) is driven by a rodless cylinder bending, which performs a short stroke action to push the article A on the conveyor onto the fixed table (4), and also when the front end of the group of articles crosses the fixed table and engages the stopper (7). Two long stroke motions are performed in which the trailing end of the group of articles is pushed out until it is stopped.

In addition, the accumulation table (2) is shown in Figures 3 and 4 + a
1 to fe), it is supported by a pair of guide rods C131 and driven in the front-rear direction by a loftless cylinder 041. The moving distance is from the point where the rear end of the stacking table (2) approaches the fixed table until the group of articles accumulated on the table reaches the predetermined discharge position. While retracting, the device is designed to be able to swing back and forth within a range that does not crush the items that have already been ejected.

The stacking table is oscillated by a distance smaller than one pitch of the stacked articles, and this movement can be controlled by a limit switch or a position sensor, or by pre-programmed operation control.

A stopper a is provided above the stacking table (2) and between it and the cover member (6) to support the retreat of the group of articles when the stacking table moves forward. This stopper α9 has a fulcrum Oe on the outside of the accumulation table (2),
The accumulation table (2) is rotationally driven by the cylinder 07).
) should be able to appear above. Figure 1 shows a state where the stopper 051 is on the side of the stacking table and articles are being stacked on the table, and Figure 2 shows the stacking table moving forward and the stopper α9 rotating upward. This shows a state in which the rear part of the group of articles is supported.

4+81 to 4+81 show the operating sequence of the device according to the invention.

Figure 4 (al indicates the starting position. Accumulation table (2)
is in a retracted position adjacent to the fixed table (4), and the covering member (6) is stopped very slightly above the height of the article A. The articles A being conveyed by the conveyor (1) are pushed onto the fixed table (4) by short stroke movements of the pusher (3). When the next article is further pushed onto the fixed table, the previous article is pushed onto the accumulating table.

At this time, since the upper part of the article A is restricted by the cover member (6), there is no risk of the article falling over during movement.

In order to prevent the article A from falling on the conveyor, it is placed on a support Om that is the same as or larger than the large cross-section of the article. The pusher (3) pushes out only the articles to the side.

The desired number of articles on the conveyor in front of the pusher (3), the accumulation table (2), and the fixed table (4) are stacked [
When the number of articles reaches 3×4 in the illustrated embodiment, the pusher (3) performs a long stroke operation to push the entire group of articles forward as shown in FIG. (7).Meanwhile, a packaging carton blank D is supplied and waiting in front of the collecting table (2).

Thereafter, the cover member (6) is pushed upward by the cylinder 0υ, and the carton blank D where the accumulating table (2) is waiting as shown in FIG.
Move forward until you are directly above the. At this time, a stopper aS is waiting at a predetermined position in front of the group of articles, and prevents the articles from falling forward and from jumping out beyond the predetermined position.

When the accumulation table (2) moves forward, cylinder 071
The stopper 09 driven by is rotated above the table to block the rear end of the group of articles from being pulled back.

When the rear end of the group of articles is blocked by the stopper in this way, the accumulation table (2) begins to retreat as shown in FIG. 4+81. At this time, the cover member (6) has returned to its original position.

When the accumulating table (2) begins to move backward, the lower ends of the articles on the accumulating table are pulled rearward due to friction with the table. Then, the first part of the article group (two rows in the drawing) is discharged onto the carton blank D in a slightly inclined state. However, the stacking table (2) is pushed back a little forward as shown by the two-dot chain line in FIG. The posture of the article is corrected by pressing the lower end.At this time, the inclination of the article on the accumulation table (2) is also corrected.

In this state, if you move back from the accumulation table (2) again,
As shown in FIG. 4+81, the entire group of articles is discharged onto the carton blank D in a roughly correct posture and arrangement. When the ejection of the articles is completed, the stopper θ returns to its original position on the side of the accumulation table (2).

The number of times the accumulating table (2) is oscillated back and forth varies depending on the quantity of the entire group of articles and the shape of the articles.

For example, it may move backward while reciprocating at two or more locations.Furthermore, after the entire group of articles has been discharged, the accumulation table (2) may be moved back and forth to push back the articles in the last row to some extent. You can also.

As mentioned above, even while the group of articles on the accumulation table (21) is being discharged, the articles A are sent one by one by the conveyor (1), but this is due to the fixed table as shown in Figure 4 (dl). (4) Pushed upward.

In other words, the time required to discharge the group of articles on the accumulation table (2) is reduced by
If it is within the time required to supply a smaller number of articles than the number placed in front of the pusher in 1), no loss time will occur in the work cycle.

Therefore, the fixed table (4) can be made large enough to accommodate two or more rows of articles. However, the selection of the size of the fixed table is related to the number of articles to be accumulated, the feeding speed, the time required for discharge, etc., and the fixed table may be omitted depending on the working conditions.

〔Effect of the invention〕

According to the conveyance article accumulation and discharge device of the present invention as set forth in claim 1, it is possible to efficiently accumulate the articles sent by the conveyor and to discharge the accumulated article group. Moreover, even if the articles are in the shape of an inverted pyramid, they can be discharged in an accurate arrangement without overturning them.

According to the invention set forth in claim 2, in carrying out the invention set forth in claim 1, it is possible to enable a continuous flow of work, eliminate loss time, and prevent overturning and arrangement of items on the stacking table. It can be assumed that there is no risk of going crazy. Further, in the invention as claimed in claim 3, it is possible to avoid overturning of the articles after being ejected and the displacement of the ejecting position, and also to prevent the articles from falling over and shifting the ejecting position. Since the group can be supported so as to sandwich the group, it is possible to discharge the group of articles more smoothly.

[Brief explanation of the drawing]

The attached drawings are for explaining an embodiment of the apparatus for collecting and discharging conveyed articles according to the present invention. Figure 1 is a plan view of the entire apparatus, and Figure 2 is a diagram of the entire apparatus with the accumulating table moved to the discharge position. A plan view, Figure 3 is a front view of the entire device, Figures 4 (fat to 4 (al) are side views showing the movement of the main parts according to the operating order, respectively, and Figure 5 (al and 5 (bl is a schematic diagram showing an example of an article discharge state when the accumulation table is moved backward without reciprocating. (1) - Conveyor conveyor, (2) - Accumulation table,
(3) - Pusher, (4) - Fixed table,
F61-Covering member, (71,09,QL-Sh Fuha, +81-Support rod, αυ, Q7+・-Cylinder, (2), 041・-Rodless cylinder, al-
guide rod. Patent applicant Nippon Tetrabafuku Co., Ltd. Figure (e) Two rodless shillings 15: 1 stonopa: stonova

Claims (1)

[Claims] 1. A collection table (2) is arranged on the side of the transport conveyor (1), the article A sent by the transport conveyor (1) is pushed out by a pusher (3), and the collection table (2) is placed on the side of the transport conveyor (1).
A group of articles in a predetermined arrangement is stacked on top of the stacking table (2), the stacking table (2) is advanced to a predetermined position, and the rear of the group of articles is supported by a stopper (15).
The stacking and discharging of conveyed articles is characterized in that when the stacking table (2) is moved back and forth and the group of articles is discharged to a predetermined position, the stacking table (2) is moved back and forth within one pitch of the array of articles during the retreat. Device. 2. A fixed table (4) is arranged between the conveyor (1) and the accumulation table (2), and the accumulation table (
2) Above is a stopper (
7) is placed such that it can be moved up and down with respect to the accumulation table, and the pusher (3) that pushes out the article A performs a short stroke operation that pushes out one article A, and a predetermined number of articles A. 2. The apparatus for accumulating and discharging conveyed articles according to claim 1, wherein after extrusion, a long stroke operation is performed to push out the group of articles beyond a fixed table until the front end of the group of articles is stopped by a stopper (7) at the front end of the cover member. 3. The stopper (15) that supports the rear of the group of articles rotates in a plane so that it can freely appear and retract above the accumulation table,
A stopper (
19) The conveyance article accumulation and discharge device according to claim 1 or 2, further comprising: 19).