JPH0818652B2 - Lifting / conveying unit for articles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting and lowering and conveying unit for articles, which is useful for constructing a stock conveyor line or the like for sorting and stocking various kinds of articles in multiple stages and carrying them in and out arbitrarily.

[0002]

2. Description of the Related Art A stock conveyor line is known in which various kinds of articles are stacked in multiple stages and stocked, and can be arbitrarily loaded and unloaded.

In this system, for example, a plurality of stock conveyors capable of so-called accumulating operation are arranged in multiple stages, and ascending / conveying for classifying articles into the conveyors of each stage and loading the articles. The unit is combined with a descending transport unit for unloading articles of each type from each conveyor. Here, the ascending transport unit
For example, it may be a conveyor that moves obliquely and rises, or a lift device that operates by a cylinder, etc., and the descending conveyance unit may be a conveyor or tray that obliquely descends and may be a lift device. An appropriate format may be selected depending on the shape, size, weight, etc. of the article to be handled. In general, a skewed conveyor or tray needs to be installed with its start end and end fixed, so it is necessary to install it for each stage of conveyors. Since it can be stopped according to the height position, it is sufficient to install only one each for loading and unloading.

[0004]

According to the prior art described above, since the skewed conveyors and trays have a limit in increasing the inclination angle thereof, a large installation floor area is required as a whole, and the lift is increased. Since the apparatus cannot continuously transfer the articles to and from the conveyor, the problem that the transfer process takes an excessive amount of time cannot be avoided.

Therefore, in view of the problems of the prior art, an object of the present invention is to combine the first conveyor, the second conveyor, and the rotating disk with the guide member,
An object of the present invention is to provide a lifting / lowering conveyance unit for articles which does not require an excessive installation floor area and can realize continuous conveyance processing in a short time.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the structure of the present invention comprises a first conveyer capable of accumulating operation for horizontally conveying a pallet, and a pair of front and rear arranged on the upper part of the first conveyer. Accumulation operation for horizontally transporting the pallet in the opposite direction to the first conveyor, with the rotating disc, a guide member arranged in front of the rotating disc and capable of retracting to the retracted position, and the rear side of the rotating disc as one end The rotary disk has a notch into which the pair of front and rear control rollers attached to the pallet are simultaneously fitted, and the rotary disk is synchronized with each other and is provided with the first conveyor and the second conveyor. The gist of the invention is to prevent the control roller from falling out of the notch in the operating position by rotating in the traveling direction.

[0007]

According to the structure of the invention, the rotating disc is
Since each pair of front and rear control rollers attached to the pallet has a notch that fits simultaneously, the rollers rotate in synchronization with each other.
By fitting the control rollers into the respective notches, the pallet on the first conveyor can be conveyed upward and transferred onto the second conveyor while maintaining the horizontal posture of the pallet. The pallets on the two conveyors can be conveyed downward and transferred onto the first conveyor. However, in the operating position, the guide member prevents the control roller from falling out of the notch with respect to the pallet being conveyed upward or downward in this way, so that the pallet should be stably raised or lowered. You can

By retracting the guide member to the retracted position, even if the control roller fits in the notch of the rotating disk, the control roller immediately falls off from the notch. At this time, the rotating disc cannot carry the pallet upward. That is, the guide member can arbitrarily switch whether or not the pallet is conveyed upward via the rotating disk.

[0009]

Embodiments Embodiments will be described below with reference to the drawings.

The ascending / descending / conveying unit for articles comprises the first conveyors 11, 11 and the second conveyor 1 for horizontally conveying the pallet P.
2, 12 and a pair of front and rear rotating discs 13, 13, 14,
14 and guide members 15 and 15 as main members (FIG. 1).

The pallet P has transfer rollers P2 and P2 on a pallet plate P1 on which an arbitrary article B is loaded.
..., control rollers P3, P3, ..., guide rollers P4, P
4. Auxiliary rollers P5 and P5 are attached to the pallet plate P1 so as to protrude to the left and right (FIG. 2). Transport rollers P2, P2
Are mounted rotatably on the left and right sides of the pallet plate P1, two on each of three shafts projecting at equal pitches.
Each of the carrying rollers P2 is a flanged roller. Further, the control rollers P3, P3, ... Are pivotally attached to the front and rear shafts except for the middle so as to be adjacent to the outer side of the outer conveying roller P2, respectively. Further, the guide rollers P4, P4 and the auxiliary rollers P5, P5 are axially attached to the tip ends of different diagonal axes of the pallet plate P1. However, each guide roller P4 is axially mounted adjacent to the outside of the control roller P3, and the auxiliary roller P5
Are mounted at a distance from the control roller P3.

Cushion members P6 and P6 are attached to the front and rear end surfaces of the panel plate P1, respectively.

Each of the first conveyors 11 and 11 is formed by winding an endless chain 11b around a sprocket 11a (FIG. 1). The chains 11b, 11b are arranged parallel to each other corresponding to the outer conveying rollers P2, P2, ... Of the pallet P, and a common drive shaft 11c for connecting the sprockets 11a, 11a by a drive motor (not shown). By rotating the arrow K1 in FIG.
It shall run in the K1 direction. That is, the first conveyors 11, 11 support the pallet P via the outer transfer rollers P2, P2, ...
It can be transported horizontally in one direction.

The rotating disks 13, 13, 14, 14 are the first
It is arranged above the conveyors 11, 11 (FIGS. 1 and 3). The rotating disks 13, 13, 14, 14 are pallets P
The left and right front rotary discs 13, 13 and the left and right rear rotary discs 14, 14 are arranged to face each other so as to correspond to the control rollers P3, P3 ,. Each of the rotating discs 13 and 14 has a notch 13a and 14a into which the control roller P3 fits, and the distance between the shafts is the same as that of the front and rear control rollers P3 and P3. ing. The rotating disks 13 and 14 are driven in the traveling direction of the first conveyors 11 and 11 in synchronization with each other (directions of arrows K3 and K3 in FIGS. 1 and 3). The rear rotary disk 14 is formed such that the radius of the cutout 14a on the front side in the rotation direction is slightly shorter.

Therefore, the rotating discs 13, 13, 14, 14
The control rollers P3 and P3 at the front and rear of the pallet P conveyed through the first conveyors 11 and 11 can simultaneously fit into the respective notches 13a and 14a (FIGS. 3 and 4). .

The left and right rotating discs 13 and 14 have independent shafts 13b and 14b, respectively. Each shaft 13b, 14b
Pulleys 13c and 14c are fixed to the pulley 13
A timing belt 16 is wound around c and 14c. Further, the other pulleys 13d and 14d are fixed to the shafts 13b and 14b on one side, and the other belt 17 is wound around the pulleys 13d and 14d. However, the belt 17 is arranged corresponding to the auxiliary roller P5 on one side of the pallet P. In addition, on the opposite side of the belt 17,
A fixed guide 18 is provided from the front rotating disk 13 to the rear rotating disk 14, and the guide 18 corresponds to the guide roller P4 on one side of the pallet P.

The second conveyors 12, 12 are arranged with the rear rotary disks 14, 14 as one end (FIGS. 1 and 4). That is, each of the second conveyors 12 and 12 has the pulley 1 with respect to the shaft 14b that fixes the rotating disk 14.
2a is fixed and the chain 12b is wound around the pulley 12a. The chains 12b and 12b are assumed to be arranged in parallel corresponding to the conveying rollers P2, P2, ... Inside the pallet P, and are driven in the directions of arrows K2 and K2 in FIGS. 1 and 4 by a drive motor (not shown). Can drive. That is, the second conveyors 12 and 12 horizontally convey the pallet P in the direction opposite to that of the first conveyors 11 and 11. In addition, the chain 12b of the second conveyor 12, 12,
The lower part of 12b is bent sufficiently higher than the first conveyors 11 and 11 by a tension roller (not shown).

The guide members 15, 15 are arranged in front of the front rotary disks 13, 13. Guide member 15,
Reference numeral 15 designates conveyance rollers P2, P2, ... Inside the pallet P.
Corresponding to, and the inner circumference thereof is formed in a substantially half-moon shape so as to draw a concentric circle with the front rotating discs 13, 13. In addition, each guide member 15 has an upper shaft 15
It can be retracted to the retracted position (two-dot chain line in FIG. 4) by opening upward via a.

Therefore, consider a case where the guide members 15 and 15 are in the operating position (solid line in FIG. 4). At this time, the guide members 15, 15 are the control rollers P before and after the pallet P.
3, P3, ... Fit into the notches 13a, 13a, 14a, 14a of the rotating disks 13, 13, 14, 14 by guiding the conveying rollers P2, P2 in front of the pallet P along the inner circumference. , Control rollers P3, P3 ... Notch 1
It is possible to prevent falling off from 3a, 13a, 14a, 14a. That is, the rotating disc 1 at this time
3, 13, 14 and 14 rotate in synchronization with the directions of arrows K3 and K3 in FIG.
The upper pallet P can be conveyed upward while maintaining a horizontal posture.

Further, when the guide members 15, 15 are in the retracted position, the control rollers P3, P3, ... Are fitted into the notches 13a, 13a, 14a, 14a once, but the rotating discs 13, 13 are also fitted. , 14, 14 are immediately dropped due to rotation, and the pallet P on the first conveyor 11, 11 passes through the lower parts of the rotating disks 13, 13, 14, 14 and is discharged forward. I will end up. That is, the guide members 15, 15 can switch whether the rotating discs 13, 13, 14, 14 carry the pallet P upward by taking the operating position and the retracted position.

The pallet P thus conveyed upward has the traveling directions opposite to each other above the rotating disks 13, 13, 14, 14 (FIG. 5), and the front conveying rollers P2, P2 are Chain 1 of the second conveyor 12, 12
By riding on 2b and 12b, the front control rollers P3 and P3 are cut into the notches 14 of the rotating disks 14 and 14.
a, 14a. At this time, the rear auxiliary roller P5 rides on the rear portion of the belt 17 (FIG. 1), and the rear guide roller P4 rides on the rear portion of the guide 18, so that the rear control rollers P3, P
3 can also come out of the notches 13a, 13a of the rotating discs 13, 13. Therefore, the pallet P is moved forward by being pulled by the second conveyors 12, 12 on the front side and pushed by the belt 17 on the rear side (FIG. 6), and the control rollers P3, P3 on the rear side rotate the pallet P1.
It is possible to temporarily fit the notches 14a and 14a of the Nos. 4 and 14 and finally move the entire parts onto the second conveyors 12 and 12.

That is, the rotating disks 13, 13, 14, 1
4, the pallet P conveyed in the directions of the arrows K1 and K1 of FIG. 1 via the first conveyors 11 and 11 is maintained in the horizontal posture on condition that the guide members 15 and 15 are in the operating position. While being conveyed upward, the second conveyor 12, 12
Can be discharged on top. In addition, the second conveyor 12,
Thereafter, 12 conveys the pallet P in the directions of arrows K2 and K2.

At the time when the rear control rollers P3, P3 correspond to the notches 14a, 14a (FIG. 6),
The rear guide roller P4 may be disengaged from the front end of the guide 18, and therefore the rear side of the pallet P may be twisted so that the guide roller P4 side is lowered (two-dot chain line in the figure). However, at this time, the intermediate conveying rollers P2 and P2 have already run on the second conveyors 12 and 12 (solid line in the figure), and therefore the pallet P at this time may have excessive twist distortion. Absent.

Further, in FIG. 5, the rotating disks 13, 14 are
A long auxiliary guide 19 is arranged above. However, a pair of left and right auxiliary guides 19 are provided so as to correspond to the outer transport rollers P2, P2, ... Of the pallet P, respectively. Therefore, the auxiliary guide 19 is used for the pallet P.
After the rear side of the pallet comes out of the guide members 15 and 15, the pallet P bounces upward and prevents the control rollers P3, P3, ... From coming out of the notches 13a, 13a, 14a and 14a.

In the above description, the transport rollers P2, P2, ..., The control rollers P3, P3 that are pivotally attached to the pallet P are used.
..., guide rollers P4, P4, auxiliary rollers P5, P5
Are all rotatable. Therefore, the first conveyors 11 and 11 and the second conveyors 12 and 12 are respectively
Even if the pallet P that is being conveyed is stopped, the pallet P can travel without any trouble, and so-called accumulation operation is possible. Therefore, the rotation speeds of the rotating disks 13, 13, 14, 14 and the first conveyors 11, 11, the second conveyors 12, 12
It is preferable that the traveling speed of the vehicle is approximately the same as the traveling speed of the vehicle, but it is not always necessary to maintain a strict synchronization relationship. The pallet P has the control rollers P3, P3, ...
When fitted to 3a, 14a, 14a, on the first conveyor 11, 11, the second conveyor 12, 12, the belt 1
This is because it is possible to arbitrarily stop and wait on the guide 18.

If the rotating directions of the first conveyors 11, 11, the second conveyors 12, 12, and the rotating disks 13, 13, 14, 14 are reversed, the rotating disks 13, 13, 14, 14 are rotated.
Can transport the pallet P conveyed through the second conveyors 12, 12 downward and discharge it onto the first conveyors 11, 11 in exactly the same manner. However, the guide members 15, 15 at this time are to be placed in the operating position.

Further, as shown in FIG. 5, the belt 17 has control rollers P3, P3, ...
It is for pushing out the pallet P toward the rotating disc 14 after the pallet P has been pulled out from a, 14a, 14a to advance the pallet P (FIG. 1). Therefore, the belt 17 may be, for example, a cylinder mechanism or a cam mechanism that directly pushes out the pallet plate P1, and in that case, the auxiliary rollers P5 and P5 of the pallet P can be omitted.

The guide 18 merely serves to temporarily support the rear side of the pallet P from below and prevent the pallet P from being excessively distorted. Therefore, the guide 18
For example, one of the rear transport rollers P2, P2, ... May be replaced with a movable guide that temporarily supports the left and right pairs from below. In that case, the guide rollers P4, P4 may be omitted. Further, the guide members 15 and 15 may correspond to the control rollers P3 and P3 instead of corresponding to the inner conveying rollers P2 and P2. Similarly, since the action of the conveying rollers P2, P2, ... In the middle portion is extremely temporary, the guide 18 is extended substantially to the front side in the traveling direction of the pallet P via, for example, an appropriately movable guide. By doing so, they can be omitted.

[0029]

[Application] Two sets of the lifting / lowering conveyance unit for articles can be arranged on a common frame so as to face each other (FIG. 7). Here, drive motors M1 and M2 for driving the first conveyors 11 and 11 and the second conveyors 12 and 12 are also shown, and the drive motor M1 is the chain 11
It is connected to a common drive shaft 11c on the front side in the traveling direction of the first conveyors 11, 11 via d. The drive motor M2 is connected to a common drive shaft 12d on the front side in the traveling direction of the second conveyors 12, 12 via a chain 12c. However, the drive shaft 12d is provided with a pair of chains 12e, 12e, and the rear rotating disks 14, 14
It is assumed that the shafts are connected to the shafts 14b and 14b. The sprockets 12a, 12a of the second conveyors 12, 12 are fixed to the shafts 14b, 14b.

In the rear of each rear rotary disk 14, 14, the first conveyor 11, 11, the second conveyor 12, 1,
Stoppers 21, 2 for stopping the pallet P on the 2
1 is provided. In FIG. 7, the distance between the left and right rotary disks 14, 14 is sufficiently long, and a plurality of pallets P, P ...
1, 11, the second conveyor 12, 12 shall be able to stop.

In the left and right lifting transport units, the belt 1
7, 17 and guides 18 and 18 are attached in mutually opposite directions (FIGS. 8 and 9). However, in FIGS. 8 and 9,
In addition to the cylinder 15b that drives the guide members 15 and 15 via the shaft 15a, side plates F and F of the frame for assembling the members are also shown. Further, in FIGS. 8 and 9, the pallet P is represented by the rotating disks 13, 13, 1 respectively.
4 and 14 are shown below the middle part and above the middle part.

Now, referring to FIG. 7, the guide members 15 and 15 of the right-side up-and-down conveyance unit are retreated to the retreat position, and the pallet P loaded with the articles B is carried in from the outside at the upstream end of the first conveyors 11 and 11. Then, the pallet P can be horizontally conveyed in the direction of the arrow K1 in the figure by passing through the underside of the right-side elevating and conveying unit by the first conveyors 11 and 11 (arrow A1 in the figure).
At this time, a plurality of pallets P, P ... Can be parked on the first conveyors 11, 11 by activating the stoppers 21 arranged on the upstream side of the left-hand lifting transport unit. .

Therefore, the guide members 15 and 15 of the left-hand lifting transport unit are retracted to the retracted position, and then the stopper 2 is moved.
When 1 is released, the pallets P, P ... On the first conveyors 11, 11 can be discharged to the downstream end of the first conveyors 11, 11 (arrow A2 in the figure). On the other hand, at this time,
When the guide members 15 and 15 are driven to the operating position, the left-side lifting and lowering transfer unit sequentially transfers the pallets P, P ...
It can be discharged onto the conveyors 12, 12. That is, at this time, the pallets P, P ... Can be stopped on the second conveyors 12, 12 by operating the stopper 21 on the upstream side of the right lifting transport unit.

Therefore, it is assumed that there are now two types of articles B, B ... On the pallets P, P ... For one type, the guide members 15, 15 of the left-hand lifting transport unit are provided.
To the retracted position and, for the other type, to the actuated position, the former causes the first conveyor 11, 11 to move.
Discharged from the downstream end of the second conveyor to the second conveyor 1
It can be discharged to the outside from above 2 and 12 (arrow A3 in the figure).

Further, since there is only one type of article B, the pallets P, P ... Are carried in according to the arrow A1 in FIG.
When discharging according to the above, the left and right elevating / conveying units can sequentially convey the pallets P, P ... 1 conveyor 1
Not only 1 and 11, but also the second conveyors 12 and 12 can be used as stock conveyors for the pallets P, P ... Generally, it is twice as much as a simple stock conveyor line consisting of only the first conveyors 11 and 11. Pallet P,
P ... can be stocked.

A plurality of lifting and lowering transport units are provided on the conveyor 3
It can be arranged so as to be vertically laminated via 1, 32, ... (FIG. 10).

The conveyors 31, 32, ... Are arranged one above the other, and run in the opposite directions alternately in the directions of arrows K31, K32 ,. In addition, each conveyor 32, 33
... have different lengths alternately, and the respective elevating and lowering transport units are arranged at the respective upstream ends of the conveyors 32, 33 ,.

Now, the pallet P carried into the upstream end of the conveyor 31 according to the arrow B1 in FIG.
Of the guide member 1 by the elevating / conveying unit at the upstream end of the
5 is moved upwards when placing it in the operating position, and the conveyor 3
2 can be discharged on. In addition, when the guide member 15 of the lifting and lowering conveyance unit is placed in the retracted position, the arrow B
According to 2, it can be carried out from the downstream end of the conveyor 31.

On the other hand, the pallet P discharged onto the conveyor 32 can be conveyed upward and discharged onto the conveyor 33 by placing the guide member 15 of the lifting / conveying unit at the upstream end of the conveyor 33 in the operating position. it can. Therefore, this pallet P can be conveyed upward and discharged onto the conveyor 34 when the guide member 15 is placed in the operating position by the elevating and conveying unit at the upstream end of the conveyor 34, and the guide member 15 is retracted. When placed in position, it can be unloaded from the downstream end of the conveyor 33 according to arrow B3. Further, in the same manner, the pallet P on the conveyor 34 is discharged onto the conveyor 35, and finally,
It can be carried out from the downstream end of the conveyor 35 according to the arrow B4.

That is, this system switches the pallet P from the arrows B2, B3 and B4 in FIG. 10 by switching the guide members 15 and 15 of the elevating and conveying units at the upstream ends of the conveyors 32 and 34 according to the type of the article B. It is possible to carry out after classifying into. Also here, it is possible to stock a large number of pallets P, P ... By appropriately increasing the lengths of the conveyors 31, 32 ... And using a stopper (not shown) in combination. Moreover, this system can arbitrarily increase or decrease the number of stacked layers of the conveyors 31, 32, ....

Here, the conveyor i (i = 32, 33 ...)
Focusing on the elevating / conveying units at the respective upstream ends, it is clear that the conveyor (i-1) corresponds to the first conveyors 11 and 11, and the conveyor i corresponds to the second conveyors 12 and 12. Further, when the upper and lower layers are arranged in this manner, the auxiliary guides 19 and 19 are arranged in the uppermost elevating and lowering transport unit (for example, the conveyor 35 in FIG. 10).
It is sufficient to attach it only to the upstream / downward transport unit at the upstream end of.

It is also possible to combine the first and second application examples to form a larger stock conveyor line (FIG. 11).

Long conveyor 41 running in the direction of arrow K41
An elevating / conveying unit is provided at both ends of the conveyor, and a long conveyor 47 that travels in the opposite direction (arrow K47 direction in the figure) is provided below the conveyor 41. Also, the conveyor 41
Conveyor 5 at both ends traveling in the opposite short direction above
, 52, and conveyors 42, 43, ... Intermediate lengths that run in the same direction are alternately stacked, and the other ends of each conveyor 42, 43. .. are arranged at the upstream ends of the conveyors 51, 52 ... And the downstream ends of the conveyors 61, 62. Incidentally, the conveyor i (i = 41, 42 ..., 51, 52 ..., 61, 62 ...)
The traveling direction of each is the direction of arrow Ki in FIG.

When articles B are loaded on the empty pallet P at the upstream end of the conveyor 41 according to the arrow C1, the pallet P moves the guide member 15 of the lifting / conveying unit at the upstream end of the conveyor 51 between the retracted position and the operating position. By switching, it is discharged to the intermediate portion of the conveyor 41 and stocked there, or is conveyed upward, and then discharged to the upstream end of the conveyor 42 via the conveyor 51 and the elevating / conveying unit at the upstream end of the conveyor 41. Can be selected. However, the stopper 21 at the upstream end of the conveyor 41 is
The conveyors 41, 42 are provided for the convenience of loading
The intermediate stoppers 21, 21, ... Are placed at the stop positions for stopping the pallet P, respectively.

On the other hand, the pallet P discharged to the upstream end of the conveyor 42 is then switched by switching the guide member 15 of the elevating and conveying unit at the upstream end of the conveyor 52.
It is discharged to the middle portion of the conveyor 42 and stocked there, or conveyed upward, and then the conveyor 52 and the conveyor 43.
It is possible to select whether the sheet is discharged to the upstream end of the conveyor 43 via the ascending / descending transport unit at the upstream end of. Similarly, pallets P, P ...
By switching the guide members 15, 15 ... Of the lifting and lowering transport unit at the upstream ends of the conveyors 51, 52 ...
For example, sorting by the type of the article B, the conveyor 41,
42 ... can be stocked in each intermediate part.

Then, for example, when carrying out the pallet P on the conveyor 44, the stopper 21 at the intermediate portion of the conveyor 44 is released, and the guide member 15 of the elevating and conveying unit at the downstream end of the conveyor 64 is set to the retracted position. .
As a result, the pallet P is conveyed downward through the elevating / conveying unit at the downstream end of the conveyor 44, and the conveyor 63
Then, it can be further conveyed downward through the elevating / conveying unit at the downstream end of the conveyor 63, and can be finally discharged onto the conveyor 41 in the same manner. That is, the pallet P on the conveyor 44 is finally discharged to the downstream end of the conveyor 41, and the article B can be carried out according to the arrow C2. The same applies to the pallets P that are stocked in the middle of the other conveyors 41, 42 ....
Note that another stopper 21 is provided at the downstream end of the conveyor 41 for the convenience of carrying out the article B.

On the other hand, the empty pallet P after carrying out the article B according to the arrow C2 is conveyed downward through the elevating / conveying unit at the downstream end of the conveyor 41, and is moved up and down at the upstream end of the conveyor 41 via the conveyor 47. Since it can be returned to the transport unit, it can be further transported by the lifting transport unit, and the article B can be loaded and reused. In addition, the article B is carried in according to the arrows C1 and C2,
In order to carry out, a conveyor line for transportation can be connected to both ends of the conveyor 41 via an appropriate transfer device.

[0048]

As described above, according to the present invention, the pallet is conveyed upward by providing the first conveyor, the rotary disk having the notch, the guide member, and the second conveyor. And can be smoothly transferred from the first conveyor to the second conveyor, and can be transferred downward and transferred in the reverse direction. Further, the guide member allows the transfer to such an upward or downward direction. Since the necessity of transportation can be switched arbitrarily, it is compact as a whole,
It does not require an excessive floor area, and unlike lift equipment, it does not require any special waiting time and can realize continuous transfer processing in a short time, making it extremely easy for stock conveyor lines of any size. It has the excellent effect that it can be built.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view.

FIG. 2 is an explanatory perspective view of a pallet.

[Fig. 3] Operation explanatory diagram (1)

[Fig. 4] Operation explanatory diagram (2)

[Fig. 5] Operation explanatory diagram (3)

FIG. 6 is an operation explanatory diagram (4)

FIG. 7 is an explanatory side view showing an application example (1).

FIG. 8 is a view equivalent to the arrow X in FIG.

9 is a view equivalent to the arrow Y in FIG. 7.

FIG. 10 is an explanatory side view showing an application example (2).

FIG. 11 is a side view (3) showing an application example.

[Explanation of symbols]

 P ... Pallet P3 ... Control roller 11 ... First conveyor 12 ... Second conveyor 13, 14 ... Rotating disk 13a, 14a ... Notch 15 ... Guide member

Claims (1)

[Claims] 1. A first conveyor capable of accumulating operation for horizontally transporting a pallet, a pair of front and rear rotating discs disposed on an upper portion of the first conveyor, and a front disc disposed in front of the rotating disc. The rotating member includes: a guide member that can be retracted to a retracted position; and a second conveyor that has one end on the rear side of the rotating disk and that horizontally accumulates a pallet in the opposite direction to the first conveyor, and that can rotate. The disc has a notch into which the pair of front and rear control rollers attached to the pallet are simultaneously fitted, and the disc rotates in the traveling direction of the first conveyor and the second conveyor in synchronization with each other, and the guide member, An up-and-down conveyance unit for articles, wherein the control roller is prevented from falling out of the notch in the operating position.