JPH0820430A - Controller of conveyed work - Google Patents

Abstract

PURPOSE:To stop a conveyed work temporarily without imparting any shock to it by advancing a stopping member to the conveyor route of this work, spraying a braking fluid from a nozzle installed in this stopping member, and blowing this fluid to the conveyed work. CONSTITUTION:When a pallet 21 travels along a roller conveyor 20 and passes through the front of a detector 8, it is detected by this detector 8. On the basis of a detection signal out of this detector 8, a controller 10 releases a control valve 5b, spraying air from the nozzle of a stopping block 3. This air is blown to the pallet 21, whereby its speed goes down. Accordingly, this pallet 21 gently collides with the stopping block 3 and comes to a stop. At the time of this collision, a detector 9 detects the pallet 21, and on the basis of a detection signal of this detector 9, it closes the control valve 5b. Next, a pedal 7 is trodden, then the stopping block 3 is pulled via a wire rope 6, housing it in a casing 2, and a temporary cessation in the pallet 21 is released, restarting its traveling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for temporarily stopping an object to be conveyed such as a pallet conveyed by a conveyor such as a roller conveyor, a belt conveyor or a chain conveyor.

[0002]

2. Description of the Related Art When temporarily stopping an object to be conveyed such as a pallet that is conveyed by a conveyor such as a roller conveyor, a belt conveyor, or a chain conveyor, a stop block is projected in the conveyance path of the pallet, Colliding pallets.

[0003]

However, if a pallet loaded with precision parts such as electronic parts and electronic equipment is temporarily stopped as described above, the impact due to a collision may adversely affect the load.

[0004]

In order to solve the above-mentioned problems, a transported object braking apparatus according to the present invention is provided with a stop member that can advance and retreat to the transport path of the transported object, and the transport member provided on the stop member. And a nozzle for injecting the braking fluid toward the upstream side of the path.

This transported object braking device is provided with a detecting means for detecting the transported object, and a control means for controlling the injection of the braking fluid from the nozzle based on a signal from the detecting means. .

The stop member of the transported object braking device is provided between the opposing rollers of the roller conveyor.

The stop member is provided between a plurality of belt conveyors or chain conveyors arranged along each other.

[0008]

According to the transported object braking apparatus of the present invention configured as described above, the stop member advances into the transportation path of the transported object and the braking expectation is jetted from the nozzle, whereby the transported object is The braking fluid is sprayed, the speed decreases, and the stopping member gently collides with the stopping member to stop.

The detection means detects the transported object, and the control means controls the injection of the braking gas from the nozzle, so that the injection of the braking gas is efficiently performed.

The above-mentioned stop member can move back and forth between the rollers of the roller conveyor to the transport path of the transported object.

Further, the stop member can be moved back and forth from a plurality of belt conveyors or chain conveyors arranged along each other to and from the conveyance path of the conveyed object.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the transported object braking apparatus according to the present invention is applied to a roller conveyor will be described with reference to FIG. Note that FIG. 1 is a side sectional view showing the schematic configuration thereof.

As shown in FIG. 1, on a roller 20a of a roller conveyor 20 which is a transportation path, a pallet 21 which is an object to be transported on which a load 22 is placed is placed. Laura 2
A table 1 is provided below 0a. On the table 1, there is a roller 2 with a cylindrical casing 2 facing each other.
It is erected so as to be located between 0a.

A cylindrical stop block 3 as a stop member is provided in the casing 2 so as to be vertically movable, and the stop block 3 can be projected onto the roller conveyor 20. The peripheral surface of the stop block 3 is made of an elastic body such as resin or rubber.

The stop block 3 is internally provided with a nozzle 4 whose front end is directed to the upstream side of the roller conveyor 20.
One end of a hose 5a is connected to the base end side of the nozzle 4. The other end of the hose 5a is connected to a compressor 5 that supplies air, which is a braking fluid, via an electromagnetic control valve 5b. Therefore, by the operation of the compressor 5, the air is ejected from the nozzle 4 via the control valve 5b.
Is injected toward the upstream side of.

A spring (not shown) is provided between the bottom plate of the casing 2 and the lower surface of the stop block 3. One end of the wire rope 6 is attached to the lower surface of the stop block 3. The other end of the wire rope 6 is attached to a pedal 7 provided below the table 1. Therefore, by depressing the pedal 7 with a foot or the like, the stop block 3 is pulled by the wire rope 6 and the casing 2
The stop block 3 projects inside the casing 2 from the casing 2 by the repulsive force of the spring when the pedal 7 is released.

On the other hand, detectors 8 and 9 as detecting means for detecting the pallet 21 are provided on the upstream side of the stop block 3 of the roller conveyor 20 and in the vicinity of the nozzles 4, respectively. The detectors 8 and 9 are control valves 5b of the compressor 5.
Is electrically connected to the control device 10 electrically connected to the control device 10. The control device 10 controls the control valve 5b based on the signals from the detectors 8 and 9.

Therefore, when the detector 8 detects the pallet 21, the control device 10 opens the control valve 5b to inject air from the nozzle 4 based on the signal from the detector 8, while
When the detector 9 detects the pallet 21, the control device 10 closes the control valve 5b based on the signal from the detector 9 to stop the air injection from the nozzle 4. In this embodiment, the control means is constituted by the control valve 5b, the control device 10, and the like.

Such a transported object braking device operates as follows. Pallet 2 along the roller conveyor 20
When 1 travels and passes in front of the detector 8, the detector 8 detects the pallet 21, and the control device 10 opens the control valve 5b based on the detection signal of the detector 8 to stop the stop block 3 Air is ejected from the nozzle 4. The air is blown onto the pallet 21 and reduces the speed of the pallet 21. Therefore, the pallet 21 gently collides with the stop block 3 and stops. Therefore, the impact due to the collision is largely dampened.

At the time of this collision, the detector 9 detects the pallet 21, the control device 10 closes the control valve 5b based on the detection signal of the detector 9, and stops the ejection of air from the nozzle 4. That is, the air is ejected from the nozzle 4 only when the pallet 21 is stopped. As a result, the operation of the compressor 5 is minimized.

Next, when the pedal 7 is depressed, the stop block 3 is pulled through the wire rope 6 and is housed in the casing 2. As a result, the temporary stop of the pallet 21 is released, and the pallet 21 moves to the roller conveyor 20.
Then, the vehicle starts traveling again. Pallet 21
When the pedal 7 is released after traveling, the stop block 3 projects from the casing 2 due to the repulsive force of the spring, and appears again on the transport path of the pallet 21. Thereafter, the pallet to be conveyed can be temporarily stopped by operating in the same manner as described above.

Therefore, in such a transported object braking device, the impact received by the pallet 21 is largely damped, and the load 22 is not adversely affected. In addition, since the air is jetted only when the pallet 21 is temporarily stopped, the air when unnecessary does not adversely affect other members.

An embodiment in which the transported object braking apparatus according to the present invention is applied to a belt conveyor will be described with reference to FIG. Note that FIG. 2 is a side sectional view showing the schematic configuration thereof. However, for the same members as those in the above-mentioned embodiment, by using the same reference numerals as those in the above-mentioned embodiment,
The description is omitted.

Two belt conveyors 30 are arranged along each other, and these belt conveyors 30 are synchronously driven. On the belt 30a of the belt conveyor 30, the pallet 21 on which the load 22 is placed is placed so as to bridge the two belt conveyors 30. That is, the pallet 21 is supported by the belt conveyor 30 on both sides of its lower surface. The table 1 is provided between these belt conveyors 30, and the table 1
A stop block 3 is provided in a casing 2 standing upright. As a result, the stop block 3 can appear and disappear on the transport path of the pallet 21. The other members are the same as those in the above-described embodiment.

Therefore, in this embodiment, the same effect as the above-mentioned embodiment can be obtained.

In these embodiments, the pallet 21
Although the air is ejected only when the temporary stop is performed, the air may be constantly ejected in some cases. Further, the flow rate and the flow velocity of the air jetted from the nozzle 4 are set based on various conditions such as the speed and weight of the pallet 21 and the weight of the load 22. Depending on this setting condition, it is possible to stop the pallet 21 without colliding with the stop block 3.

In the above-mentioned embodiments, the transported object braking device according to the present invention is applied to the roller conveyor and the belt conveyor, but it is also possible to apply it to other conveyors such as a chain conveyor and other transportation devices. The effect obtained when applied to such a thing is the same as that of the above-mentioned Example. In the above-described embodiment, the pallet 21 is braked, but the same effect can be obtained not only with the pallet but also with another transported object.

[0028]

As described above, in the transported object braking apparatus according to the present invention, the speed of the transported object is reduced by spraying the braking fluid onto the transported object, and the transported object is gently moved to the stop member. Since the objects are collided and stopped, the impact received by the transported object is greatly reduced.

By detecting the transported object by the detection means and controlling the injection of the braking fluid by the control means, the injection of the braking fluid can be efficiently performed, and the braking fluid when it is not needed can be applied to other members. It has no adverse effect.

Since the above-mentioned stop member can advance and retreat from the space between the rollers of the roller conveyor to the conveying path of the conveyed object, the conveyed object is temporarily stopped without giving an impact to the conveyed object conveyed on the roller conveyor. Can be made. Therefore, for example, even if the pallet loaded with precision products is temporarily stopped, the precision products will not be adversely affected.

Further, since the stop member can move back and forth between the plurality of belt conveyors or chain conveyors arranged along each other to the conveying path of the object to be conveyed, the stopping member is conveyed on the belt conveyor or the chain conveyor. The transported object can be temporarily stopped without giving an impact to the transported object. Therefore, for example, even if the pallet loaded with precision products is temporarily stopped, the precision products will not be adversely affected.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a schematic configuration of an embodiment in which a transported object braking apparatus according to the present invention is applied to a roller conveyor.

FIG. 2 is a side sectional view showing a schematic configuration of an embodiment in which the transported object braking apparatus according to the present invention is applied to a belt conveyor.

[Explanation of Codes] 3 Stop Block 4 Nozzle 5 Compressor 5b Control Valve 6 Wire Rope 7 Pedal 8, 9 Detector 10 Controller 20 Roller Conveyor 21 Pallet 22 Cargo 30 Belt Conveyor

Claims (4)

[Claims] 1. A stop member capable of advancing and retreating to and from a conveyance path of an object to be conveyed, and a nozzle provided on the stop member and ejecting a braking fluid toward an upstream side of the conveyance path. Transported object braking device. 2. The transported object braking device according to claim 1, wherein the detection means for detecting the transported object, and the injection of the braking fluid from the nozzle based on a signal from the detection means. A transported object braking device comprising: a control unit that controls the transported object. 3. The transported object braking apparatus according to claim 1 or 2, wherein the stop member is provided between opposed rollers of a roller conveyor. 4. The transported object braking apparatus according to claim 1 or 2, wherein the stop member is provided between a plurality of belt conveyors or chain conveyors arranged along each other. The transported object braking device.