JPS6382204A - Conveyor device equipped with storing mechanism - Google Patents

Abstract

PURPOSE:To store the transported articles without applying a large force by allowing the rollers selected in a prescribed intervals to be brake-applied, in a roller conveyor which is installed in inclined form so that the transported article travels by itself. CONSTITUTION:A conveyor 18 is arranged on the downstream side of a roller conveyor 14 installed in the inclined state, and the roller 22 of the conveyor 14 consists of the alternate arrangement of two rollers which can revolve freely and two rollers which are restrained in the nonrevolution stage by a brake device 24. When a transport line stops temporarily, an electric motor 52 stops, and also the downstream side conveyor 18 and an endless belt 30 stop at the same time, and the revolution of the roller 22 is suppressed by the frictional force of the endless belt 30. Therefore, a transported article shifts at the gentle speed by the retrained roller 22, and stops in the lightly contact state with the previous transported article.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a conveyor device with a storage mechanism capable of transporting objects and storing the objects when necessary.

(b) Conventional technology For example, in the case of a device that transports objects such as bags using multiple conveyors, there is no problem if the objects are continuously flowing at regular intervals, but for some reason the objects may If the number of objects temporarily increases or if a temporary stop occurs on the downstream side of the transport device, it is necessary to temporarily store the transported objects. - In the absence of temporary storage, it is necessary to shut down the entire line to prevent overflow conditions.

As a conventional storage mechanism, for example, there is one using a roller conveyor. In other words, while the roller conveyor remains in a driven state, the conveyed articles thereon are mechanically stopped by a stopper or the like, and subsequent conveyed articles are sequentially stopped by hitting the previous conveyed articles.

As a result, each conveyed article is forcibly stopped and stored under the driving force of the roller conveyor.

(c) Problems to be solved by the invention However, in the storage method described above, J7 friction always occurs between the transported objects and the driven rollers during storage, and some transported objects may be deformed or scratched. It may be attached. To prevent this, one method is to reduce the driving force of the rollers as much as possible during storage, but this poses the problem of complicating the structure and control, and also prevents smooth conveyance when operation is restarted. There is also a problem. The present invention aims to solve these problems.

(d) Means for Solving the Problems The present invention solves the above problems by braking only predetermined rollers of the inclined roller conveyor.

That is, the conveyor device with a storage mechanism according to the present invention has the following features:
A roller conveyor is installed at an angle so that conveyed items can move on their own, and is equipped with a braking device that can brake selected rollers at predetermined intervals. The system is configured to perform braking when the downstream conveyor provided on the downstream side of the conveyor stops.

(E) Operation In the normal conveyance state, the braking device rotates the selected roller, and the other rollers are in a free state, so the conveyed objects on this roller are sequentially driven by themselves due to the inclination of the roller conveyor. If it becomes necessary to temporarily store transported items,
A braking device is actuated to brake predetermined rollers of the roller conveyor. A predetermined number of rollers are braked at predetermined intervals. The number of rollers for braking is selected depending on the inclination of the roller conveyor, the size and shape of the conveyed object, and is selected as follows.

In other words, is the frictional resistance of the entire conveyor obtained by the combination of moving rollers and non-braking rollers?
The driving force for the conveyed object should be slightly smaller than that obtained by the inclination of the roller conveyor. This reduces the self-propelling force of the conveyed object, and it easily stops when it comes into contact with the conveyed object.

As a result, the conveyed objects are stored on the roller conveyor in a state in which they are sequentially in contact with each other. At this time, the force acting between the conveyed objects is small, and since there is no relative movement between the conveyed objects and the rollers, the conveyed objects are prevented from being deformed or worn out.

(f) Examples Examples of the present invention are shown in FIGS. 1 to 3. The frames 10 and 12 provide a roller conveyor 14 in an inclined position. A downstream conveyor 18 provided on the frame 16 is disposed downstream of the roller conveyor 14. The roller conveyor 14 is rotatably supported by a guide side plate 20 and has a large number of linearly arranged rollers 22. However, predetermined rollers 22 may be restrained in a non-rotating state by a braking device 24. A frame 26 attached to the guide side plate 20 of the fil dynamic differential device 24, a plurality of ;I, II driving rollers 28 rotatably supported by the frame 26, and an endless belt wound around the braking roller 28. 30. A roller 4o whose shaft position is variable is provided on the frame 26 for guiding the endless belt 30, and on another frame 38 attached to the guide side plate 20, for adjusting the tension of the endless belt 30. Further, the endless belt 3o is configured to be wound around a roller 42 provided on the frame 16 and driven thereby. The roller 42 is configured to rotate together with a positive gear 44 provided coaxially therewith, and this gear 44 is pressed against another tooth 1rL45. The sprocket 48 integrated with the gear 46 is the chain 5
0 to an electric motor 52, and this electric motor 5
2, the gear 46 is rotationally driven.

The belt 47 of the downstream conveyor 18 is wound around the tooth B1146, and the belt 47 of the downstream conveyor 18 is thereby driven. Therefore, the endless belt 3
0 will be driven in synchronization with the downstream conveyor 18. A plurality of braking rollers 28 provided on the frame 26
are arranged parallel to the rollers 22 of the roller conveyor 14 at predetermined intervals.

father! i41 City It III low→ri At+low→hang small A"shi β-r.The relative position of the frame 26 with respect to the guide side plate 20 can be adjusted by an adjustment mechanism 54 constituted by a screw, As a result, the endless belt 30 is sandwiched between the braking roller 28 and the roller 22.Thereby, when the endless belt 30 is stopped, each braking roller 2
The two rollers 22 adjacent to the roller 8 are stopped by the frictional force of the endless belt 30. That is, the roller 22
is in a state in which two parts that can rotate freely and two parts that are braked are arranged alternately.

Next, the operation of this embodiment will be explained. In a state where steady operation is being performed, the electric motor 52 is rotationally driven,
This rotation causes the chain 50, sprocket 48 and gear 4
6 to the downstream conveyor 18, and the downstream conveyor 18 is driven. When the electric motor 52 is rotationally driven, the endless belt 30 is also driven via the gears 46, 44, and rollers 42. As a result, the rollers 22 are in contact with each braking roller 28 via the endless belt 30.
is rotating at a predetermined rotational speed. Further, the other rollers 22 are in a state where they can freely rotate. When a conveyed object is supplied from, for example, the chute 60 on the upstream side of the roller conveyor 14 in this state, the conveyed object rotates the roller 22 due to its own weight and moves downstream. As a result, the conveyor is transferred onto the downstream conveyor 8, and further downstream by the downstream conveyor 18, for example, the conveyor 6.
Carried to 2. In this way, the conveyed objects that are sequentially supplied are transported.

When the conveyance is temporarily stopped due to some kind of malfunction in the conveyance line, the following operation is performed. That is,
The electric motor 52 is stopped, and the drive of the downstream conveyor 18 is stopped. At the same time, the drive of the endless belt 30 is also stopped, and when the conveyed object reaches the downstream end of the roller conveyor 14 while being braked, the stopped downstream conveyor 1
When it comes into contact with the belt 47 of No. 8, it stops due to its frictional resistance. When the driving of the endless belt 30 is stopped, the rotation of the roller 22, which is pressed by the braking roller 28 via the endless belt 30, is prevented by the frictional force of the endless belt 30. This brings the rollers 22 into a state in which two rotatable rollers and two braked rollers are arranged alternately. Therefore, the conveyed object is transferred to the braked roller 2.
Since it receives a large frictional force from 2, it moves at a very slow speed. That is, a total of 136. The force is the roller conveyor 1
The force is set to be slightly smaller than the force to move the conveyed object obtained by the slope of No. 4. Therefore, the conveyed object can be stopped with a very small force.

Since the conveyed article at the 'F stream side end of the roller conveyor 14 is stopped by frictional resistance with the heald 47 of the stopped downstream conveyor 18, the subsequent conveyed article is stopped while lightly touching the conveyed article. do. The next conveyed object also stops in a state in which it is in slight contact with the previous conveyed object. As a result, the conveyed articles are stored on the roller conveyor 14 while the downstream conveyor 18 is stopped. The stored objects are only receiving a very small pushing force from the following objects, and since the rollers 22 are not rotating, there is no relative movement between them and the rollers 22.

That is, no force is acting on the conveyed object that would cause it to deform or wear out. When resuming conveyance from a state in which conveyed objects are stored in this way, the electric motor 5
What is necessary is to restart the rotational drive of step 2. As a result, the downstream conveyor 18 is driven and the endless belt 30 is also driven, so that the braking state of the rollers 22 is released, and the stored articles fall onto the downstream conveyor 18 one after another.

(G) As described in detail, according to the present invention, some of the rollers of the roller conveyor are moved by a braking device, and a large force is applied to the conveyed object. It becomes possible to store this without having to use it.

[Brief explanation of the drawing]

FIG. 1 is an enlarged view of a roller conveyor device according to the present invention, FIG. 2 is a view showing a roller conveyor device according to the present invention, and FIG. 'Tr23 is a plan view of FIG. 2. 14... Roller conveyor, 18... Lower m side conveyor, 22... Roller, 24... Braking device.

Claims (1)

[Claims] 1. A roller conveyor installed at an incline so that conveyed objects can move by itself is provided with a braking device capable of braking selected rollers at predetermined intervals among the rollers of the roller conveyor. This braking device is a conveyor device with a storage mechanism configured to perform braking when the downstream conveyor provided downstream of the roller conveyor stops. 2. The braking device includes a plurality of braking rollers arranged parallel to the lower surface of the roller conveyor at predetermined intervals, an endless belt that is pressed against the rollers of the roller conveyor by the braking rollers, and a braking device that connects the endless belt to the downstream conveyor. 2. A conveyor device with a storage mechanism according to claim 1, comprising: a drive device; and a drive mechanism that moves and drives.