JPH0366041B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is provided, for example, in the workshop of a processing machine,
This invention relates to a device for transporting parts, processed products, etc. of this processing machine.

<Conventional technology> As a processing machine, for example, the rolls of a steel rolling mill are frequently replaced due to wear or changes in rolling shape, and in particular, the frequency of replacement due to changes in rolling shape is approximately 20%.
It can be quite high, ~30 times/day. Conventionally, such roll replacement has been carried out as follows.

First, as shown in FIG. 3, a track 3 consisting of a pair of rails 2 is laid in the work area of the rolling mill 1, and two traveling carts 4 and 5 are placed on this track 3 to constitute a conveying device. . Then, the roll stand 6 assembled to the rolling mill 1 is pulled out and the pushing means 8
The carriage 5 and the carriage 5 are pulled out and placed on the carriage 4 which is placed next to the rolling mill 1, and the carriage 5 and the carriage are placed on the rolling carriage 4 which is placed next to the rolling mill 1. Run 4 and
The traveling carriage 5 is placed next to the rolling mill 1, and the traveling carriage 4 is positioned at the right position (position B) of the rolling mill 1. Next, the roll stand 7 on the traveling carriage 5 is assembled to the rolling mill 1 by the pull-out and pushing means 8, while
The roll stand on the traveling truck 4 is lowered to the transshipment work area C by a crane (not shown) installed on the ceiling, and a new roll stand is placed on the traveling truck 4 and kept on standby. Further, when replacing the roll stand of the rolling mill 1, place the roll stand 7 on the traveling carriage 5, run it in the opposite direction to the above, bring the traveling carriage 4 next to the rolling mill 1 again, and replace the new roll. While assembling the stand to rolling mill 1,
The roll stand 7 on the traveling carriage 5 at the position is lowered to the transshipment work area C by the crane, and a new roll stand is placed on the traveling carriage 5 and made to stand by.

<Problems to be Solved by the Invention> When replacing a roll stand using a conventional conveying device, the roll stand had to be transferred to a traveling cart at position A or position B. As shown by the dotted line in Figure 3, the route of the crane from the transshipment work area C to each traveling truck changes each time, and the transportation distance by the crane becomes longer, the transshipment work time of the roll stand becomes longer, and the operational efficiency of the rolling mill 1 decreases. There was a problem in that it also lowered the Furthermore, since a roll stand suspended from a crane passes in front of the operator's cab 9 disposed in front of the rolling mill 1, there is a problem in that the operation of the rolling mill 1 is hindered. Furthermore, since positions A and B, where the traveling carriages are located, are near the rolling mill 1, there is a problem in that the slinging operation is dangerous.

The present invention was made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a highly efficient conveyance device that reasonably solves the above-mentioned problems.

<Means for Solving the Problems> The conveyance device according to the present invention has a plurality of tracks laid in parallel to each other, and is provided at both ends of the tracks so as to be able to move between the tracks and to be continuous with the tracks. A frame-type circulating track is formed from a turntable having a track that can be used, and a track that can be continuous with the plurality of tracks via the track of the turntable, and independently driven on each track. The present invention is characterized in that a plurality of traveling carts are arranged that can stop at the workpiece exchange position and the workpiece transfer position.

<Function> By moving the turntable between the tracks, multiple running carts are made to circulate independently on each track,
Workpieces are continuously exchanged and transshipped at a predetermined location.

<Example> An example in which the conveying device according to the present invention is applied to the work of replacing a roll stand of a rolling mill is shown in FIGS. 1 and 2.
This will be explained based on the diagram.

A rolling mill 11 for processing a seamless pipe 10 has four roll stands 12 assembled therein, and each of these roll stands 12 has three rolling rolls 12a assembled therein. roll stand 1
2 is assembled to the rolling mill 11 by engaging with a guide rail 11a provided in the rolling mill 11, as shown in FIG.
As will be described later, the rolls are loaded and unloaded between the rolling mill and the traveling carriage by a drawer pushing means 13 that engages with a hook 12a provided at the rolling mill. still,
The drawer pushing means 13 is for reciprocating the engaging pawl 13a that engages with the hook 12a using a fluid pressure cylinder 13b, but it may also be for example for reciprocating the engaging pawl 13a using a feed screw mechanism or a rack and pinion mechanism. It's okay if it's hot.

As shown in FIG. 1, an operator's cab 14 is installed in front of the rolling mill 11, and the operation of the rolling mill 11, the drawer pushing means 13, a turntable, a running cart, etc., which will be described later, can be carried out centrally in the operator's cab 14. It is now possible to do this at

A track 15 consisting of a pair of rails 15a and a track 16 consisting of a pair of rails 16a are laid in parallel to each other on the workshop floor between the rolling mill 11 and the operator's cab 14. Pits 17 and 18 are formed at both ends of the tracks 15 and 16 in the workshop, respectively, and within these pits 17 and 18 is a turntable 21 that can move between the tracks 15 and 16 along rails 19 and 20, respectively. , 22 are provided. Tracks 23 and 24 consisting of a pair of rails 23a and 24a are laid on the upper surfaces of these turntables 21 and 22, respectively, and the turntables 21 and 22 are respectively run by drive means (not shown) such as drive motors. Then, orbits 23 and 24 become orbits 15 and 16, respectively.
It is now possible to selectively continue. Also,
Further on the sides of the pit 17 in the workshop are tracks 25 and 26 consisting of a pair of rails 25a and 26a, respectively.
are laid parallel to each other, and these tracks 2
5 and 26 are respectively connected to the orbits 15 and 26 via the orbit 23.
16 consecutively.

Therefore, the above orbits 15, 16, 23, 24, 2
Three running carts 27, 2 placed on top of 5, 26
8 and 29 can run and circulate on a frame-shaped circulation track consisting of tracks 15, 16, 23, and 24, and can also move on tracks 25 and 26.
These traveling vehicles 27, 28, 29 can be driven by equipping the traveling vehicles 27, 28, 29 with a drive motor and supplying power to this using a battery system or trolley system, or by driving the traveling vehicles 27, 28, 29 themselves. A chain installed on the track side without a motor,
This is done by engaging gears, rubber wheels with a traveling carriage and driving the carriage by these chains.

Further, a transshipment workshop 32 where replacement roll stands 30 are stored is installed near the side of the track 26 in the workshop, and this transshipment workshop 32 and the track 26
A crane (not shown) is installed above the carriage and the transshipment work area 32 located on the track 26.
It is now possible to transship roll stands between the two.

A roll stand replacement operation using the conveying device having the above configuration will be explained.

First, the traveling cart 27 is placed on the track 15 in front of the rolling mill 11 on the roll stand 12 currently in use.
At the same time, the carriage 28 carrying the roll stand 33 to be used next is placed on the left side of the carriage 27 in FIG. 1. Here, the track 15 is provided with a stopper 34 that is driven up and down by a fluid pressure cylinder or the like and can engage the wheels of the traveling vehicle.
It is designed so that it can be positioned and held in front of the rolling mill 11.

Next, the roll stand 12 is pulled out from the rolling mill 11 by the pull-out/pushing means 13 and moved to the traveling carriage 27.
The carriage 27 is moved to the right in FIG. 1 from the track 15 to the track 26 via the track 23.
At the same time, the carriage 28 is moved upward and is positioned and stopped in front of the rolling mill 11. Here, before the traveling vehicle 27 is moved, the traveling vehicle 29 on the track 26 is transferred between the roll stand 30 in the transshipment work area 32 and the previously used roll stand, and transferred to the track 16 via the track 23. The carriage 29 is moved upward, and further moves onto the track 15 via the track 24 and waits on the left side of the carriage 28. Therefore, roll stands for the next and subsequent replacement operations can be placed on standby in the vicinity of the rolling mill 11, thereby improving the rolling mill efficiency by shortening the replacement operation time.

Next, the rolling stand 33 on the traveling carriage 28 located in front of the rolling mill 11 is pulled out and rolled by the pushing means 13. Assemble to machine 11. In this way, the transshipment work of the roll stand is carried out on the track 26 which is distant from the rolling mill 11.
Because the work is done from above, slinging work can be carried out safely. Furthermore, since the track 26 and the transshipment work area 32 can be installed adjacent to each other, the transportation distance of the crane is shortened and the transshipment work time is shortened, and the crane route can be placed in a position that does not obstruct the view of the operator's cab 14. There is no possibility that the settings would interfere with the operation of the rolling mill 11. Note that the track 25 is extended to the roll polishing place, and the turntable 21 is arranged so that the traveling carriage 27 is moved from the track 23 to the track 25 when it is necessary to polish the rolls on the roll stand.
The conveyance device may be set to operate.

That is, according to the conveying device according to the present invention, by repeatedly performing the above-described series of operations,
Roll stand replacement work can be performed efficiently.

Although the above embodiment uses three traveling carts, the number may be set as appropriate depending on the purpose of the conveying device, the frequency of use, etc. Furthermore, it goes without saying that the conveying device according to the present invention is not limited to being used for roll stand replacement work, but can be used for various other purposes.

<Effects of the Invention> According to the present invention, since the traveling cart is circulated in a frame shape, workpieces such as roll stands can be transported efficiently, and the work of loading and unloading the workpieces onto the traveling cart can be carried out using a rolling mill or the like. Work safety can be ensured because it can be performed at a location away from the processing machine.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of a conveyance device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the relationship between a roll stand and a drawer pushing means, and FIG. 3 is an overall view of a conventional conveyance device. FIG. 2 is a perspective view showing the configuration. In the drawing, 15, 16, 23, 24 are orbits, 2
1 and 22 are turntables, and 27, 28, and 29 are running carts.

Claims (1)

[Claims] 1. A frame-type circulation track is constructed from a plurality of tracks laid in parallel to each other and turntables that are provided at both ends of the tracks and have tracks that can move between the tracks and can be continuous with the tracks. At the same time, a track is formed that can be continuous with the plurality of tracks via the track of the turntable, and can be driven independently on each track, and can be stopped at a workpiece exchange position and a workpiece transfer position. A conveying device characterized by having a plurality of traveling carts arranged therein.