JPH0475909A - Transferring of articles to be transferred - Google Patents

Abstract

PURPOSE:To improve working efficiency during transferring in a production line by arranging engagement parts which engage with carrier passages respectively on the front and rear parts of articles to be transferred, and installing forked routes on the carrier passages to guide the engagement parts respectively to the routes different from each other with the forked routes. CONSTITUTION:Carriage C are held with the fronts and rears of vehicle bodies B fitted to each other, and engagement parts H1, H2 are made to engage with a carrier rail R for transferring. When they reach the inlet part of a drying furnace F, a sensor, which is not illustrated here, comes into action at a branch part P1 to connect the carrier rail R and a route R1 with each other and disconnect the carrier rail R and a route R2. As a result, the engagement part H1 of the carriage C moves to the route R1, and advances in a crossing condition to the rail R as illustrated. Next, after changing over the carrier rail R1 to the route R2, the engagement part H1 is made to enter the route R2 (condition (c)). At a junction P2, route connection is also changed over in order in the same way to return to a condition (e) for transferring.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for transporting objects that is applied to production lines and the like.

[Conventional technology]

For example, on an assembly line or a painting line for automobile bodies, the car bodies (objects to be conveyed) are arranged so that their front and rear sides are along the conveyance direction, and the bodies are conveyed in this position, allowing them to be sequentially assembled, painted, etc. I try to carry out the following process.

[Problem to be solved by the invention]

By the way, in order to improve the efficiency of work in each process in the above-mentioned production line, etc., it is preferable to convey the object to be conveyed in a posture suitable for the particular work process.

For example, in the above-mentioned automobile body assembly transport line, the parts to be assembled are usually placed on both sides of the transport line, so when parts are assembled at the front and rear ends of the car body,
If the vehicle body is rotated about 90 degrees with respect to the transport direction and the food is transported with the front and rear ends close to the parts, the work of assembling the parts can be carried out efficiently.

For this reason, conventionally, posture changing devices such as rotary tables are attached to required locations on the conveyance path, thereby changing the posture of the conveyed object with respect to the conveyance direction.

However, in a production line equipped with such an attitude change device, the conveyance of the conveyed object must be stopped while the conveyed object is being rotated, and this stoppage of conveyance causes a decrease in productivity. There is a risk.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a method for transporting objects that can improve work efficiency while suppressing a decrease in productivity.

[Means to solve the problem]

In the method for conveying an object according to the present invention, engaging parts that engage with the conveyance path are arranged at the front and rear parts of the object, respectively, and a bifurcated path is provided in the conveyance path. The engaging portions of the conveyed object are guided to different paths in the paths.

[Effect]

According to the above configuration, the front part and the rear part of the transported object pass through two different paths, thereby changing the attitude of the transported object with respect to the transport path.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail based on drawings showing embodiments.

FIG. 1 conceptually shows a part of a conveyance line to which the method of conveying objects according to the present invention is applied, and illustrates a car body drying process in a painting conveyance line for four-wheeled vehicle bodies. There is.

As shown in FIGS. 1 and 2, the painting conveyance line illustrated here conveys an automobile body (an object to be conveyed) B along a conveyance rail (conveyance path) R. It has a trolley C on top.

This trolley C is not clearly shown in the drawings, but is equipped with holding means for holding the vehicle body B at multiple locations on its upper surface, and is provided with the transport rail R on the lower surface of its front part and the lower surface of its rear part. It is provided with engaging parts H, , H2 that engage with each other, and is moved along the rail R by a driving means such as a drive chain (not shown) disposed on the transport rail R via these engaging parts HIH2. Transported and run. Although not clearly shown in the figure, in this coating conveyance line, a plurality of carts C configured as described above or a plurality of carts C are arranged on the conveyance rail R at predetermined intervals.

On the other hand, in this coating conveyance line, as shown in Figure 1,
The conveyor rail R in the above vehicle body drying process is at the branch point P1
The route is once branched into two routes R1R2, and further merged into one transport rail R again at a junction P2.

Further, as shown in FIG. 2, the coating conveyance line is provided with heat insulating materials G, G, etc. in the upper region, both side regions, and lower region of the vehicle body drying process, respectively. Insulation material G, G
. . . are arranged in a rectangular box shape, and a drying oven F is installed at a portion of the transport rail R that includes the bifurcated routes R1 and R2.
It consists of

The drying oven F has both front and rear end surfaces open, and hot air circulation ducts W, W, .

Although not clearly shown in the drawings, well-known track switching means are provided at each of the branching portion P1 and the merging portion P2 of the transport rail R. Moreover, the above-mentioned bifurcated route R1,
The distance R2 is set smaller than the distance between the engaging portions H, , H2 in the cart C.

In the coating conveyance line configured as described above, as shown in FIG. The vehicle bodies B are sequentially transported on the transport rail R. At this time, the engaging portion H1 disposed on the lower surface of the truck C,
Since both H2 and H2 are engaged with one transport rail R,
The vehicle body B held on the trolley C is transported in a posture along the front and rear of the vehicle or in the transport direction (the direction indicated by the arrow in the figure).

When the cart C holding the painted car body B reaches the inlet of the drying oven F as shown at position a in FIG. Trajectory switching means (not shown) at the branching point P1
is activated, and first, the transport rail R and the route R1 are connected to each other, and the transport rail R and the route R2 are disconnected from each other.

When the cart C is further transported from this state, the engaging portion H1 arranged on the front lower surface of the cart C is guided along the path R1.

When the cart C passes through the engaging portion H1 or the branching portion P1, the track switching means (not shown) of the branching portion P1 is activated again by an output signal from a sensor (not shown) provided at the branching portion P1. Then, the transport rail R and the route R2 are connected to each other, and the transport rail R and the route R1 are connected to each other.
Disconnect from.

When the truck C is further transported from this state, the engaging portion H2 arranged on the rear lower surface of the truck C is guided along the path R2, and as shown at position b in FIG. B is tilted with respect to the transport direction.

The car body B, which is tilted with respect to the transport direction, is transported through the drying oven F while maintaining that state together with the trolley C (C in the figure).
position), the hot air circulation ducts W, W installed on both sides of the drying oven F dry the paint applied to the top and peripheral surfaces thereof, and the hot air circulation ducts W, W installed between the routes R1 and R2 The hot air circulation duct W dries the paint applied to the lower surface. In addition, vehicle body B in the transport state
The front-rear direction (X in the figure) and the normal to the transport direction (Y in the figure) have an angle of about 5° to 45°.

After that, the engaging portion H1 provided on the lower front surface of the truck C is connected to the path R1 and the path R2 as shown at position d in FIG.
When approaching the confluence P2 with the transport rail, the above-mentioned trajectory switching means (not shown) of the confluence P2 is activated by the output signal of a sensor (not shown) disposed on the route R1, and the route R1 and the conveyor rail are connected to each other. R are connected to each other, and the route R2 and the transport rail R are disconnected from each other.

When the cart C is further transported from this state, the engaging portion H1 disposed on the lower front surface of the cart C is connected to the transport rail R.
will be guided to.

When the engaging portion H1 of the truck C passes through the merging portion P2, the track switching means (not shown) of the merging portion P2 is activated again by an output signal from a sensor (not shown) provided at the merging portion P2. Then, the route R2 and the transport rail R are connected to each other, and the route R1 and the transport rail R are disconnected from each other.

When the trolley C is further transported from this state, the engaging portion H2 arranged on the rear lower surface of the trolley C or the transport rail R
will be guided to.

At this time, as shown at position C in FIG.
As a result, the vehicle body B held on the trolley C is returned to a position along the transport direction, and is transported to the next process in this position.

According to the car body drying process of the coating conveyance line configured as described above, the attitude of the car body B can be changed without stopping the conveyance of the car body B, so that a decrease in productivity is not caused.

Moreover, since the car body B is conveyed in the drying oven F in an inclined position, the hot air circulation duct W can be placed on the lower surface of the car body B to ensure sufficient drying. The number of car bodies accommodated in the furnace F can be increased, and productivity can be improved.

In addition, although the above-mentioned example illustrates a transport method applied to a car body drying process in a painting transport line for four-wheeled vehicle bodies B, the present invention is of course also applicable to transporting other objects to be transported. Can be applied. Further, although the present invention is applied to a conveyance line that conveys the object B via the cart C, the object may be directly engaged with the conveyance path and conveyed, for example. Furthermore, although the present invention is applied to a conveyance line that conveys objects on the upper surface of the conveyance path R, the present invention is not limited thereto. For example, the present invention can be applied to a conveyance line in which objects to be conveyed are suspended and conveyed on a conveyance path installed on a ceiling or the like.

Furthermore, there is a bifurcated path R1°R2 in a part of the conveyance path R.
However, this bifurcated path may be provided over the entire length of the conveyance path. In this case, it is possible to change the attitude of the transported object with respect to the transport direction by appropriately changing the distance, length, etc. between the paths.

Further, in the above embodiment, the conveyed object B in the conveyed state is
The normal line between the front and back direction and the conveyance direction is approximately 5° to 45°.
Although conveyance is carried out in a posture having an angle of .degree., the present invention is not limited to this.

〔Effect of the invention〕

As explained above, according to the method for transporting an object according to the present invention, the front part and the rear part of the transport object pass through two different routes, thereby improving the posture of the transport object with respect to the transport path. Since the position of the conveyed object can be changed, that is, the posture of the conveyed object can be changed without stopping the conveyance of the conveyed object, it is possible to improve work efficiency while suppressing a decrease in productivity as much as possible.

It is a front view.

B...Transferred object, HI R...Conveyance path, R1 R2...engaging portion, two-way route.

[Brief explanation of drawings]

Claims (1)

[Claims] Engaging portions that engage with the conveyance path are arranged at the front and rear portions of the conveyed object, respectively, and a bifurcated path is provided in the conveyance path, and the engaging portion of the conveyed object is disposed in the bifurcated path. A method for transporting objects, characterized in that each object is guided to a different route.