JPH0353968Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention uses monorails installed in factories, automated warehouses, etc. to transport workpieces or articles from a certain location to a destination location to perform a predetermined task. The present invention relates to a type of conveyor transport system in which work is carried out, and in particular, to a transport conveyor that allows work to be carried out safely and reliably even in a poor atmosphere such as a flammable or ignitable atmosphere caused by painting.

(Prior Art) As the above-mentioned type of conveyor, for example, an electric truck consisting of a main vehicle and a driven vehicle having self-traction force is suspended on a monorail equipped with a trolley wire, and works or articles are loaded onto the electric truck. There is a model that can be transported by hanging (Jikko 62-
(See Publication No. 25464).

(Problem to be solved by the invention) When performing painting work on a workpiece or article carried and transported by a hanger member integrated with an electric trolley on such a conveyor, the work atmosphere may be flammable or ignitable. In order to become
There is a risk of explosion due to sparks between the trolley wire and the collector when the electric trolley is running.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a conveyor that can safely and reliably perform coating work on works or articles even in a bad atmosphere such as a flammable or ignitable atmosphere.

(Means for Solving the Problem) Therefore, according to the present invention, a pair of supporting metal fittings are installed oppositely on both sides in the traveling direction of the transport frame of an electric trolley that runs on a monorail installed in a factory. The inner end of the shaft, which has a wheel attached to its outer end and which is supported by a pair of brackets facing each other, is placed on the upper surface of a hanger frame that supports a work or article. A processing chamber is installed at a predetermined location on the monorail conveyance line, and a processing chamber is provided with an endless belt drive mechanism equipped with a hooking member that engages with the shaft, and a fixed rail. , wires each having one end connected to a drive source are wound around pulleys installed at the tops of opposing masts, and attachments that move up and down along the masts are attached to the ends of the wires, and these attachments A lift mechanism formed by integrally bridging an elevating rail is arranged at the top, and the hanger frame, which was traveling suspended from the transport frame of the electric trolley, travels only within the processing chamber by the endless belt drive mechanism. It is configured to do so.

(Example) In FIG. 1, 1 is a well-known electric trolley having self-traction force, 2 is a monorail installed in a factory or the like on which the electric trolley is suspended and runs, and 3 is a trolley wire attached to the monorail. , 4 is a processing room for forming a safety zone during painting work;
Reference numeral 5 designates an endless band drive mechanism, and the electric trolley mainly has a motor 7 mounted on either one of a pair of leading frames 6 and trailing frames 6' (leading frame 6 in the figure). It consists of a main vehicle 8 and a driven vehicle 9 that drive and travel on a monorail 2, and a transport frame 10 that connects the two frames, and a collector that contacts the trolley wire 3 and supplies power to the motor on the top of the preceding frame 6. An electronic device 11 is provided, and a hanger frame 14 for supporting a work or article 13 is supported by a pair of V-shaped support fittings 12 provided oppositely on both sides of the transport frame in the direction of movement. This support is provided by placing the inner end of the shaft 16, which is pivotally supported by a pair of brackets 15 provided oppositely on the upper surface of the hanger frame, on the support metal fitting, and Wheels 17 mounted on the outer ends of the rails run on lifting rails 18 and fixed rails 19.

Further, a processing chamber 4 for painting workpieces or articles 13 is installed in a manner to maintain airtightness on a predetermined location F-L of the conveyance line formed by the monorail 2, and an endless belt drive mechanism 5 is installed. , which is roughly installed along with a fixed rail 19 in the processing chamber laid below the monorail,
It mainly consists of a driving wheel (sprocket wheel) 20, a driven wheel (sprocket wheel) 21, and an endless belt (endless chain belt) 22 attached to both of these driving wheels. Bracket 1 of hanger frame 14 at intervals
A plurality of hooks 23 are provided to engage with a shaft 16 pivotally supported at ) and upstream side (exit) so that it can be stopped with sufficient margin.

In addition, as shown in FIG. 2, two lift mechanisms 2 are provided facing each other at the downstream side of the processing chamber 4.
4 winds a wire 27, one end of which is connected to a drive source (not shown), around a pulley 26 installed at the top of the opposing mast 25, and an attachment 28 at the end of the wire that moves up and down along the mast.
are attached, and a lifting rail 18 is integrally bridged over these attachments, so that the lifting rail 18 is raised and lowered by the operation of the drive source.

(Function) Therefore, in this conveyor configured as described above, in order to paint the workpiece or article 13, the hanger is supported on the conveyance frame 10 of the electric trolley 1 at a speed of about 20 m/sec. The workpiece or article carried by the frame 14 and transferred from the direction of arrow A is stopped at the A position of the electric trolley (or wheels 17) by cutting off the power supply to the trolley wire 3 before the processing chamber 4. At the same time, it stops at position A'. Next, the lift mechanism 24 is activated, and the attachment 2, which was previously in the ``ro'' position, is
By raising the lifting rail 18 integrated with 8 to the A position and further raising the attachment, the lifting rail lifts the wheel 17 to the C position, so that the workpiece or article 13 is placed in the C' position, and the transport frame 10 is disengaged from the hanger frame 14, and if the trolley wire 3 is energized in this state, the electric trolley 1 runs on the monorail 2, passes above the processing chamber 4, and completes the processing. The workpiece or article 13 coated in the chamber is stopped at a position where it is suspended from the transport frame 10 of the electric trolley.

Next, the lift mechanism 24 is operated in the opposite manner to the above, and the lifting rail 18, which had been in the position C, is moved.
If it is lowered to the B position, that is, to the same level as the fixed rail 19, the work or article 13 that was in the C' position will be brought to the B' position. Therefore, when the endless belt drive mechanism 5 is operated, the endless belt 22 is circulated in the direction of arrow B, and the engaging member 23 of the endless belt engages with the shaft 16, so that the wheels 17 run on the lifting rail 18. At the same time, the workpiece or article 13 is transferred to the fixed rail 19 and transported into the processing chamber 4 to be painted.
Even if the inside of the processing chamber becomes a bad atmosphere such as a flammable or ignitable atmosphere due to painting, the transport of the hanger frame 14 is carried out by the endless band drive mechanism, so no spark is generated, so there is no risk of explosion. This enables safe and reliable painting work.

Next, the hanger frame 14 carrying the coated workpiece or article 13 is stopped when it comes to the upstream side of the processing chamber 4 by the operation of the endless band drive mechanism 5, and the hanger frame 14, which is carrying the coated workpiece or article 13, is stopped when it comes out to the upstream side of the processing chamber 4.
4, the hanger frame is suspended from the transport frame 10 in the reverse order, and by resupplying power to the trolley wire 3, the electric trolley 1 runs on the monorail 2 and moves to the next process.

(Effects of the invention) From the above, according to the invention, a processing chamber for painting is provided at a predetermined location on the conveyance line, and until then, the conveyance is carried on a hanger frame suspended on an electric trolley. Since the workpieces or articles that have been washed are removed from the electric trolley together with the hanger frame and passed through the processing chamber by an endless belt drive mechanism, even if the atmosphere becomes flammable or ignitable due to painting work, Since the electric trolley is not energized, no spark is generated between the trolley wire and the collector, and explosions can therefore be prevented, allowing the prescribed work to be carried out safely and reliably. It is effective.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing the main parts of a conveyor according to the present invention, and FIG. 2 is a side view showing a different operating mode. Note that the correspondence relationship between the main parts shown and the symbols is as follows. DESCRIPTION OF SYMBOLS 1...Electric trolley, 2...Trolley wire, 4...Processing chamber, 5...Endless belt drive mechanism, 10...Transportation frame, 12...Supporting metal fittings, 13...Work or article, 14...Hanger frame , 15...Bracket, 16...Shaft, 17...Wheel, 18...
... Lifting rail, 19 ... Fixed rail, 23 ... Latching member, 24 ... Lift mechanism, 25 ... Opposing mast, 26 ... Pulley, 27 ... Wire, 28 ... Attachment.

Claims (1)

[Scope of utility model registration request] A pair of supporting metal fittings are provided oppositely on both sides in the direction of movement of the transport frame of the electric trolley that runs on a monorail installed in the factory, and a pair of supporting metal fittings are provided facing each other on the upper surface of the hanger frame that supports the workpiece or article. The inner end of a shaft having a wheel attached to its outer end is pivotally supported by a pair of brackets provided on the monorail, and a hooking member that engages with the shaft is placed at a predetermined location on the conveyance line consisting of the monorail. A processing chamber with an attached endless belt drive mechanism and a fixed rail is installed, and one end is attached to a pulley installed at the top of the opposite mast installed in front of the downstream side of the processing chamber. winds a wire connected to a drive source, attaches to the end of the wire an attachment that moves up and down along the mast, arranges a lift mechanism in which a lifting rail is integrally bridged over these attachments, and The conveyor is characterized in that the hanger frame, which is suspended from a conveyor frame of an electric truck and travels, is configured to travel only within the processing chamber by the endless belt drive mechanism.