JPH0432342Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an accumulation conveyor device that can store objects to be conveyed, and sequentially cut out and carry out the conveyed objects.

BACKGROUND OF THE INVENTION As an accumulation conveyor device as described above, a configuration is provided in which a rocking lever for performing a seesaw movement is provided, for example, as seen in Japanese Utility Model Publication No. 49-47656. According to this traditional form,
By moving the rocking lever in a seesaw manner while the roller conveyor is constantly being driven, the stored objects can be cut out one by one and further stored one after another.

Problems to be solved by the invention According to the conventional type described above, when each roller of the constantly driven roller conveyor comes into contact with the bottom surface of the stored objects and rotates freely, a certain amount of sliding occurs. Contact and impact occur, and a large number of rollers also run while idly rotating on the bottom surface. Therefore, when the object to be conveyed is conveyed via a pallet or the like, damage to the bottom surface is caused when the object is directly supported and conveyed. Furthermore, when a fragile object is stored in a case and transported, damage may occur due to impact.

An object of the present invention is to provide an accumulation conveyor device that is constantly driven but does not apply a conveying force to objects that are being strained.

Means for Solving the Problems In order to solve the above problems, the storage conveyor device of the present invention has a conveyance path formed by disposing a large number of idle rollers in the machine frame, and a conveyance path at the discharge end of the conveyance path. A stopper that can move forward and backward is provided, an endless rotating body that can come into contact with and separate from the lower surface of the idle roller group is disposed below the idle roller group, and a drive device that interlocks with this endless rotary body is provided, A plurality of independent rollers are arranged below the idle roller group with the endless rotating body inside, and lift the endless rotating body by rising to press the endless rotating body against the lower surface of the idle roller corresponding to one conveyed object. Elevating bodies are arranged in the direction of the conveyance path, elevating drive devices are provided that are linked to each of these elevating bodies, and a load detection device is provided corresponding to each elevating body,
These inventory detecting devices are configured so that when a pair of adjacent inventory detecting devices in the front and rear perform a detection operation, the rear inventory detecting device lowers the corresponding lifting drive device of the elevating body.

According to the configuration of the present invention, when an object to be conveyed is not stored, the elevating body is raised by the elevating drive device, the elevating body is lifted up by the elevating body, and the endless rotating body is combined into one object to be conveyed. It is brought into pressure contact with the lower surface of the corresponding idler roller, thereby transmitting the rotational force of the endless rotating body to the idler roller and forcibly rotating it, thereby conveying the supplied object on the conveyance path. It is possible. At this time, the objects to be conveyed are sequentially detected by the presence detection devices, but since the objects are flowing at a certain interval, a pair of adjacent presence detection devices do not detect the objects at the same time. Therefore, the raised position of the elevating body is maintained. The conveyed object is received by a stopper and stored, and the next conveyed object is received by the previously stored object and stored. When the items are sequentially stored in this manner, a pair of adjacent inventory detection devices at the front and rear will detect the items at the same time, thereby lowering the elevating body corresponding to the rear inventory detection device. Accordingly, the endless rotating body partially descends and separates from the lower surface of the idling roller corresponding to one conveyed object, and the idling roller group supporting the subsequent conveyed object is no longer driven. and stops rotating. When the stopper is lowered, the object to be conveyed at the forefront is sent out (cut out) by an idling roller that is forcibly rotated. As for the next conveyed object, since the previous one is not detected,
That is, since the pair of load presence detection devices are not detecting the load at the same time, the load is conveyed until it is received by the stopper by the forced rotation of the idle roller as the elevating body rises. As a result, a gap corresponding to one transported object is created, and due to the presence of the non-detecting load detection device, the same transport as described above is performed, and storage adjustment is performed by sequential rear feeding. .

Embodiment An embodiment of the present invention will be described below based on the drawings.

1 is a machine frame, and on the top there are many idle rollers 2.
are arranged, and these idle rollers 2 form a conveyance path 3. Of the idling rollers 2, a plurality of idling rollers 2 at each of the carry-in end and the discharge end are interlocked via belts 4 and 5 to rotate synchronously. A large-diameter separation roller 6 is installed at the unloading end.
The separating roller 6 is interlocked with the adjacent idle roller 2 via a belt 7. Below the idling roller 2, a driven shaft 9 to which a driven wheel body 8 is attached is disposed on the carry-in end side, and this driven shaft 9
is supported by the machine frame 1 via bearings 10. Further, a drive shaft 12 to which a drive wheel body 11 is attached is disposed on the discharge end side, and this drive shaft 12 is supported by the machine frame 1 via a bearing 13, and is further connected to a geared motor (driver) via an endless transmission mechanism 14. An example of a device) 15 is interlocked and connected. The endless rotating body 16 suspended between the two wheels 8 and 11 includes a large number of links 17 and connecting pins 1.
8 and rollers 19, and a resin top plate 20 is disposed on the outside and attached to the connecting pin 18. Further, the endless rotating body 16 is hung somewhat loosely, and in its upper path, the top plate 20 group is connected to the idle roller 2.
It can be freely contacted and separated from the bottom surface of the group. Said transport route 3
A stopper 21 that can move forward and backward is provided between the separation roller 6, which is the unloading end of the roller, and the idle roller 2. That is, the stopper 21 is plate-shaped, and the guide 35
It moves up and down by being guided by the rollers 6 and 2 from below between the two rollers 6 and 2, and the lifting and lowering is performed by a cylinder device 36 provided in the machine frame 1. The endless rotating body 16 is divided into a plurality of parts in the direction of the conveyance path 3 below the 2 groups of idle rollers with the upper path of the endless rotating body 16 inside, and the endless rotating body 16 is lifted up by rising.
An elevating body 22 is provided which presses the idling roller 2 corresponding to one conveyed object 38. In other words, each elevating body 22 is a rail body with a convex cross section, and receives the group of rollers 19 from below and moves toward the endless rotating body 1.
It is formed to guide 6. By attaching the unloading end side to the pedestal 23 from the machine frame 1 via the horizontal pin 24, the configuration is such that it can be raised and lowered by swinging around the horizontal pin 24. This is made possible by a cylinder device (an example of an elevating drive device) 25 provided between the frame 1 and the frame 1. Therefore, by extension of the cylinder device 25, the elevating body 22 is moved to the horizontal pin 24.
By raising it around the endless rotating body 16
The portion corresponding to the elevating body 22 can be lifted and brought into pressure contact with the lower surface of the idling roller 2. A cargo presence detection device 26 is provided corresponding to each elevating body 22.
This inventory detection device 26 has a horizontal pin 27 on the machine frame 1 side.
A pair of left and right L-shaped levers 28 are attached so as to be able to swing vertically through Sensor roller 2 installed between
9, a joint material 30 connecting the base end of the L-shaped lever 28, and a weight 31 attached to this joint material 30.
, an upper limit stopper 32 that restricts the weight 31 from rising due to its bias, a lower limit stopper 33 that restricts the weight 31 from moving downward, and a mechanical valve 34 that is operated by this downward movement. Each inventory detection device 26 detects when a pair of inventory detection devices 26 adjacent in the front and rear perform a detection operation, the rear inventory detection device 26 detects the cylinder device 25 of the corresponding elevator body 22.
It is configured to move downward. 37 is a passage detector provided on the unloading end side of the stopper 21;
Conveyed object 3 passing by photoelectric switch type
8 is detected.

Next, the operation of the above embodiment will be explained.

For example, when there is no conveyed object 38 on the conveyance path 3, each load detection device 26 does not detect the object, so all the lifting bodies 22 are raised around the horizontal pins 24 by the extension of the cylinder device 25, The endless rotating bodies 16 are lifted up by these elevating bodies 22, and each endless rotating body 16 is brought into pressure contact with the lower surface of the two groups of idle rollers corresponding to one conveyed object 38. As a result, the rotational force of the endless rotating body 16 is transferred to the idler roller 2.
At this time, the endless rotating body 16 is moving from the unloading end to the loading end on the upper path, so each free roller 2 rotates the conveyed object 38. It is forcibly rotated to send it from the end to the discharge end. When the conveyed object 38 is supplied to the carry-in end in this state, the conveyed object 38 is conveyed on the conveyance path 3 toward the discharge end side by receiving the conveying force of the two groups of idle rollers. The transported objects 38 are sequentially detected by the load detection device 26. That is, the conveyed object 38 comes into contact with the sensor roller 29 and causes the L-shaped lever 28 to swing around the horizontal pin 27 against the weight 31 . This rocking of the L-shaped lever 28 operates the mechanical valve 34, resulting in a detection movement. At this time, by feeding the objects 38 at certain intervals, the detection movement is performed one by one, and since a pair of adjacent object presence detection devices 26 do not perform detection movement at the same time, the cylinder device 25 is not operated, and therefore the raised position of the elevating body 22, that is, the forced rotation of the two groups of idle rollers is maintained. In FIG. 6, the first conveyed object 38 is received by the protruding stopper 21 and stored. At this time, the inventory detection device 26 located at point A closest to the discharge end performs a detection operation. Here, only the cylinder device 25 corresponding to point A is detected by the detection movement of the mechanical valve 34 and the stopper 2.
When both the protruding motion and the first protruding motion occur simultaneously, a contraction motion occurs, and the elevating body 22 is lowered around the horizontal pin 24. The next supplied object 38 is detected by the presence detection device 26 at point RO, and then received by the previously stopped object 38, stopped, and stored. At this time, since the load detection devices 26 at the adjacent points A and B are in detection motion, the cylinder device 25 corresponding to the rear point B moves to contract, moving the elevating body 22 towards the horizontal pin 24. lower around. As the elevating body 22 descends in this way, the endless rotary body 16 partially descends and separates from the lower surface of the free rotating roller 2 corresponding to one conveyed object 38, thereby moving to point A and the like. As shown at point B, the idle roller 2 is not driven and supports the conveyed object 38 in a stopped rotation state. Furthermore, the conveyed object 38 is detected by the object presence detection device 26 at point 2, but since it is not detected at point C, it is conveyed as is, and after being detected at point C, the object 38 is detected at point B. Since the point B is also in the detection state while being received by the object 38, the elevating body 22 at the point C is now lowered. In this way, the idle rollers 2 corresponding to the transported objects 38 that are sequentially stored and stored are not driven. Cutting out (carrying out) the transported object 38 that has been stored
This is done by lowering the stopper 21. That is, since the stopper 21 no longer protrudes, the cylinder device 25 at point A expands and contracts, raising the elevating body 22 and forcibly rotating the idle roller 2 at point A, thereby cutting out the conveyed object 38. As a result, a gap is created at point A, and the corresponding load detecting device 26 does not detect the object. Therefore, the cylinder device 25 at point B is extended and the two groups of idle rollers at point B are forcibly rotated. 38 is sent. In this way, the sheets are cut out one after another, and by moving the stopper 21 in a protrusive manner when necessary, the sheets can be stored sequentially in the same way as described above.

Effects of the Invention According to the present invention having the above configuration, the endless rotary body is brought into pressure contact with the idle roller corresponding to one conveyed object by the elevating body, so that one conveyed object can be conveyed independently.
In addition, although the system constantly drives the endless rotating body that rotates the group of idle rollers that transmit the conveyance force, the idle rollers located under the stored objects are automatically switched to non-rotation. Therefore, it is possible to eliminate the sliding contact and impact on the stored objects to be transported, thereby preventing damage or breakage of the objects to be transported.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view with the middle part removed, FIG. 2 is a view taken along arrow A in FIG. 1, FIG. 3 is a view taken along arrow B-B in FIG. 4, and FIG. 5 is a schematic side view of the whole, and FIG. 6 is an explanatory view of the operation. 1... Machine frame, 2... Idle roller, 3... Conveyance path, 15... Geared motor (drive device), 16
... Endless rotating body, 19 ... Roller, 20 ... Top plate, 21 ... Stopper, 22 ... Lifting body, 24 ... Horizontal pin, 25 ... Cylinder device (lifting drive device), 26 ... In stock Detection device, 28...
L-shaped lever, 29...sensor roller, 34...
Mechanical valve, 37... Passage detector, 38...
...Object to be transported.

Claims (1)

[Scope of utility model registration request] A conveyance path is formed by disposing a large number of idle rollers on the machine frame, and a stopper that can freely extend and retract is provided at the discharge end of this conveyance path, and a stopper is provided below the idle roller group and on the lower surface of the idle roller group. An endless rotating body capable of contacting and separating is provided, and a drive device is provided that interlocks with this endless rotating body. A plurality of independent elevating bodies are disposed in the direction of the conveyance path, the rotating body being brought into pressure contact with the lower surface of the idle roller corresponding to one conveyed object, and an elevating drive device is provided that interlocks with each of these elevating bodies, A cargo presence detection device is provided corresponding to each elevating object, and when a pair of cargo presence detection devices adjacent at the front and rear make a detection movement, the rear cargo presence detection device detects the corresponding elevating object. An accumulation conveyor device characterized in that the lifting drive device is configured to move downwardly.