JPH0624686A - Overhead traveling carriage - Google Patents

Abstract

PURPOSE:To provide an overhead traveling carriage in which a plate material and the like is surely retained by a suction cup and surely separated therefrom. CONSTITUTION:In an overhead traveling carriage 6 equipped with a lifting base 3 in which suction cups 4 are provided in the underside thereof, a first jet port 28 toward an open port to the atmosphere and a second jet port 31 toward the suction cups 4 are provided in pipelines 11, 26 communicating the inside of the suction cups 4 with the open port 13 to the atmosphere, and a change-over means 32 for feeding high pressure air to either of both the jet ports 28, 31 is provided. With this constitution, a plate material and the like is surely retained by the suction cups 4 and surely separated therefrom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead traveling carriage for transporting plate materials and paper containers of a plate material unpacking device installed on a floor in a factory or various cardboard box handling devices at a ceiling portion.

[0002]

2. Description of the Related Art In a factory that handles plate materials and paper containers, for example, a spinning factory or a knitting factory, a large number of wound packages are stacked on a plate material and placed in a paper container such as a cardboard box. At the same time as the transportation, the transported paper container is opened, the plate material units are sequentially unpacked, and the unpacked plate materials are stacked and returned.

Such work is usually carried out in a packing device or unpacking device provided on the floor of each factory.
For the transportation of these plate materials and paper containers, for convenience of space and for simplification of various transportation lines, an overhead traveling carriage installed on the ceiling is provided with an elevating platform that can be moved up and down, and a suction cup is installed on this elevating platform. It is carried out by controlling the supply of suction air to the suction cups, sucking and raising a plate material or a paper container, and carrying the ceiling portion and lowering it at a predetermined position.

[0004]

In the above-mentioned conventional apparatus, the suction cup for adsorbing the plate material or the paper container is made of a highly flexible material chamber such as rubber. Is sucked and the plate material is sucked and conveyed. Further, when the plate material or the like is separated from the suction cup, the suction air passage is opened and the atmosphere is introduced into the suction cup to release the suction force of the suction cup.

However, when separating the plate material from the suction cup,
If only the air is introduced into the suction cup, the surface of the suction cup made of a highly flexible substance will stick to the surface of the plate material, etc., and especially in the case of lightweight plate materials and paper containers, do not leave the suction cup for various work. There was a problem.

[0006] Therefore, an object of the present invention is to provide an overhead traveling carriage capable of securely holding a plate material or the like on a suction cup and surely separating them.

[0007]

In order to solve the above-mentioned problems, the present invention provides an overhead traveling carriage equipped with a lift provided with a suction cup, in a pipe line communicating the suction cup with the atmosphere opening port.
The first ejection hole toward the atmosphere opening side and the second toward the suction cup side
An ejection hole is provided, and a switching means for supplying high-pressure air to either of the ejection holes is provided, thereby making it possible to securely hold the plate material or the like on the suction cup and to reliably separate it. Is.

[0008]

Since the present invention is configured as described above, when the plate material or the like is conveyed, the elevating table is lowered and the suction cup on the lower surface is brought into close contact with the plate material or the like, and then the inside of the suction cup is communicated with the atmosphere opening port. When the switching means is switched to eject the high-pressure air from the first fumarole of the pipe, the high-pressure air from the first fumarole is ejected to the atmosphere opening port side, so that the air flow sucks the air in the suction cup. It is discharged to the atmosphere opening port, and the suction cup securely adsorbs the plate material. Next, the elevator is raised to convey it to the upper part of the predetermined position, and the elevator is lowered again. Then, when the switching means is switched to eject the high-pressure air from the second fumarole, the high-pressure air is directly supplied into the suction cup, so that the adsorbed plate material or the like immediately leaves the suction cup.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example in which the device of the present invention is used as a plate material unpacking device 7 in a knitting factory, and a package P produced in a spinning factory.
Many are placed on the plate material T, stacked in several stages, placed on the upper plate and tightly bound with a string or the like, or stacked on a cardboard box or the like and sent to the knitting factory.

In this knitting factory, a plate material unit Tu cut from a cord or taken out of a cardboard box is conveyed by a belt conveyor 1 to a reciprocating conveyor 2 of a plate material unpacking device 7. In the reciprocating conveyor 2, an elevator 3 is provided at the lower portion, a point A is located immediately below the stop position of the first overhead traveling carriage 6 traveling on the rail 5 laid on the ceiling, and an elevator 15 is provided at the lower portion. The second overhead traveling carriage 17 traveling on the rail 16 laid on the ceiling can reciprocate at a point B directly below the stop position.

A plate material stacking and unloading device 10 is provided adjacent to the plate material unpacking device 7, and the first overhead traveling carriage 6 includes the upper part of the reciprocating conveyor 2 of the plate material unpacking device 7 and the plate material stacking and unloading device 10. It is possible to travel back and forth between the conveyors 20.

A plurality of suction cups 4 are provided on the lower surface of the lifting table 3 provided at the lower portion of the first overhead traveling carriage 6, and the suction cups 4 are provided.
The inside is communicated with the atmosphere opening port 13 of the air flow adjusting device 12 provided at the lower part of the carriage by the expansion tube 11.

As shown in FIG. 2, the air flow adjusting device 12 comprises a compressor 21 and an air flow switching device 23.
The air switching device 23 is provided with a connection pipe line 26 having a first opening 24 connected to the expansion tube 11 and a second opening 25 communicating with the atmosphere opening port 13, and the connection pipe line 26 includes an atmosphere. Toward the first opening 24 side for connection between the first ejection port 28 of the first ejection nozzle 27 provided toward the second opening 25 side communicating with the opening 13 and the expansion tube 11 communicating with the inside of the suction cup 4. The second ejection port 31 of the second ejection nozzle 30 provided in the above is provided.

First ejection nozzle 27 and second ejection nozzle 30
The air pipes to the respective branches from the high-pressure air supply pipe 33 in the air supply passage switching device 32. Switching device 32
Is provided with a switching valve 35 that oscillates around a shaft 34, and an external drive device is used to close the first ejection port 28 closed position in the vertical direction in the figure and the second ejection port 31 closed position in the horizontal direction. Located in one of. The high pressure air supply pipe 33 is
The high pressure air is communicated with the discharge port 36 of the compressor 21 and is supplied to either the first jet port 28 or the second jet port 31 by the operation of the switching device 32. The first spout 28 is
It is arranged in the venturi portion 37 provided in the connection pipe line 26, and when supplying high pressure air to the first ejection port 28, a large negative pressure is generated in the connection pipe 26 due to the high pressure air flow, and the high pressure air flows through the expansion pipe 11. To suck the air in the suction cup 4. Further, when the high pressure air is supplied to the second ejection port 31, the high pressure air is supplied into the suction cup 4 via the expansion tube 11.

During operation of the above apparatus, the reciprocating conveyor 2
In contrast to the plate unit Tu stopped at the position A, the overhead traveling carriage 6 traveling on the rail 5 stops at the upper part of the point A and lowers the lifting platform 3. When the suction cup 4 provided on the lower surface of the lifting table 3 comes into close contact with the upper surface of the uppermost plate material T of the plate material unit Tu, the compressor 21 is driven and the switching device 3 is operated.
The switching valve of No. 2 is swung to the horizontal position in FIG. 2, and high pressure air is ejected from the first ejection port 28.

Thereby, the connecting pipe line 26 and the expansion pipe 1
1. The air in the suction cup 4 is sucked and exhausted through the pipe 9 formed on the lift table 3, and the suction force firmly holds and holds the plate T by the suction force.

Next, the elevating table 3 is raised and the overhead traveling carriage 6 is driven to move the conveyor 20 of the plate material stacking / unloading device 10.
Stop at the top, lower the elevating table 3, and place the plate material T on the conveyor 20. After that, the switching valve of the switching device 32 is vertically swung to close the first ejection port 28 side, and high-pressure air is ejected from the second ejection port 31 into the connection conduit 26. This high-pressure air is supplied from the first opening 24 through the expansion tube 11 and the pipe 9 into the suction cup 4, and the suction pressure in the suction cup is not nullified. By doing so, the plate material T and the adhesive state are separated from each other.

After separating the plate material T from the suction cup 4, the compressor 21 is stopped, the elevating table 3 is raised, and the plate material unpacking device 7 is opened.
Hold on. During this time, the plate material unit Pu at the A position
Is conveyed to the position B by the operation of the reciprocating conveyor 2,
The package P placed on the plate material is held by the package holding device provided below the elevating table 15 of the second overhead traveling carriage 17, and the elevating table 15 is raised to be conveyed to the next step.

When the package P on the plate material T is transported by the second overhead traveling carriage 17, the plate material unit Tu is
It is returned to the position A again by the reciprocating conveyor 2. Next, the lift 3 of the first overhead traveling carriage 6 is lowered, and the plate material T is carried out by the same operation.

By repeating these operations, all the plate materials of the plate material unit Tu are stacked on the conveyor 20 of the plate material stacking / unloading device 10 and are stringed and carried out. Further, all the packages P of the plate material unit Tu are transported to the next step by the second overhead traveling carriage 17.

In the above embodiment, the example of the plate material is shown as the member sucked and conveyed by the suction cup, but it may be used as a device for sucking and conveying a paper box such as a cardboard for packaging the plate unit.

[0022]

EFFECTS OF THE INVENTION Since the present invention is constructed and operates as described above, when the plate material, the paper container or the like adsorbed by the suction cup is separated, it can be reliably separated by the high pressure air supplied into the suction cup. Further, the high pressure air from one high pressure air supply device can be firmly separated by the suction cup and reliably separated only by switching the ejection port by the switching means, and the device is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of a factory to which an overhead traveling carriage of the present invention is applied.

FIG. 2 is a side view showing a cross section of a main part of an overhead traveling carriage of the present invention.

[Explanation of symbols]

 3 Lifting platform 4 Sucker 6 First overhead traveling trolley 7 Plate material unpacking device 10 Plate material stacking / unloading device 11 Expansion tube 12 Air flow adjusting device 13 Atmosphere opening port 21 Compressor 23 Air flow switching device 24 First opening 25 Second opening 26 Connection pipe 27 First jet nozzle 28 First jet 30 Second jet nozzle 31 Second jet 32 Switching device 33 High pressure air supply pipe 35 Switching valve 36 Discharge port 37 Venturi part

Claims (1)

[Claims] 1. In an overhead traveling carriage equipped with an elevating table provided with a suction cup, in a pipe line that communicates the inside of the suction cup with the atmosphere opening port, the first ejection port toward the atmosphere opening port side and the suction port side. And a second ejecting hole, and a switching means for supplying high-pressure air to either of the ejecting holes.