JPS6132210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises: a long material supply workshop for anodizing or painting long materials such as extruded aluminum or aluminum alloy shapes; a first storage shelf on the long material supply side;
When processing through a surface treatment line formed by sequentially arranging a series of surface treatment tanks, a second storage shelf on the long material removal side, and a long material removal work site in the longitudinal direction, at the long material supply side work site, A large number of long materials are suspended on a transport frame and transported to a first storage shelf on the long material supply side located at a high place, and then transported above a series of surface treatment tank rows, and are sequentially processed from the long material supply side. Once completed, the long material is lowered from the second storage shelf on the long material supply side located at a high place to the long material removal work area, where the surface-treated long material is removed from the transport frame and the empty transport frame is removed. The present invention relates to a method of transporting an empty transport frame that is returned to the original long material supplying workshop, and an object of the present invention is to simply transport the empty transport frame after removing the long material It is possible to return the long materials to the long material supply side of the surface treatment line, that is, the work area where the long materials are attached to the transport frame, without disturbing the surface treatment process work above the surface treatment line, with a series of movements. It is an object of the present invention to provide a method for returning a transport frame for surface treatment, in which the return path is installed within a narrow range along a surface treatment line, and the installation area of the entire surface treatment equipment can be reduced.

For example, sash frames made of extruded aluminum or aluminum alloy are long and require surface treatment, and one of the treatment methods is to use a vertical hanging method. Are known. That is, a large number of long materials are suspended from a transport frame that can be energized in a work area provided on the long material supply side of a surface treatment line having a series of surface treatment tank rows.
This is transported above a series of surface treatment tank rows in the surface treatment line and held vertically, and the transport frame is moved and raised and lowered up and down using a crane to sequentially perform treatment.After the surface treatment is completed, from above After lowering the transport frame horizontally to the work area located on the long material removal side of the surface treatment line, remove the long material from the transport frame, and return the empty transport frame to the original long material supply side. It is returned to the workshop and processed repeatedly. Therefore, methods for returning empty transport frames are known, for example, as disclosed in Japanese Patent Publication No. 55-9378 and Japanese Patent Application Laid-Open No. 55-76091.

The return method according to the former publication is to transport the empty transport frame from the work area on the long material removal side to the upper part of the surface treatment line that includes a series of surface treatment tank rows, and then use a crane to transport it one by one toward the long material supply side. However, the crane is used not only to return the transport frame, but also to move the transport frame undergoing surface treatment up and down and transport it to the next processing tank. Therefore, the crane movement program must be set to include reciprocating movements, which complicates the control and takes time to return the crane.

The method according to the latter publication is to install a return rail parallel to the surface treatment line at a high place on the side of the surface treatment line that includes a series of surface treatment tank rows, and to transport the empty transport frame from the work area on the side where long materials are removed. The transport frame moves up to the height of the rail, transfers it onto the rail, and returns it to the long material supplying workplace by rail, and when you look at the overall movement of the transport frame, it traces a rectangular trajectory on a plane. It is. Therefore, a switching device is required each time the direction is changed, and moreover, when placing the transport frame on the rail, it is necessary to place the transport frame so that the longitudinal direction of the transport frame is orthogonal to the longitudinal direction of the rail. Since the equipment is returned to the factory, the overall width of the equipment is large, and a large installation area is required.

This invention was developed in order to solve the above-mentioned drawbacks, and the present invention was developed in order to solve the above-mentioned drawbacks. The feature is that the material is returned along the tank wall of the processing tank row, and when removing the long material, the longitudinal direction of the conveying frame is perpendicular to the longitudinal direction of the surface treatment line, so the surface treatment line Remove the empty transport frame from the long material removal side of the
Provides a 90-degree turn motion, a transport motion that returns along the tank wall of a series of surface treatment tank rows, and a 90-degree double rotation motion of the empty transport frame within the long material supply side of the surface treatment line. In some cases, it may be returned.

Therefore, to specifically explain the method of the present invention with reference to an example, the surface treatment line is a work area on the long material supply side where a long material 1 is attached to a transport frame 2 from left to right as shown in FIG. A, first storage shelf B on the long material supply side, a series of surface treatment tank rows C, second storage shelf D on the long material removal side, workplace E on the long material removal side where the long material 1 is removed from the transport frame 2 The work area A on the long material supply side and the work area E on the long material removal side have undulating frames 3 and 4 that can be swung vertically and It is pivotally connected to the ends of the first and second storage shelves B and D,
Hooks 5 and 6 that support the transport frame 2 and rollers 7 and 8 that support the lower part of the long material 1 suspended on the transport frame 2 are provided on each of the undulating frames 3 and 4 so as to be able to reciprocate. . In the first and second storage shelves B and D,
Conveyors 9 and 10 that send the transport frame 2, and the undulating frame 3,
Support arms 11 and 12 for receiving or delivering the transport frame 2 from the transport frame 4 are respectively provided so as to be movable forward and backward. In addition, the first and second storage shelves B and D are used for transporting the transport frame 2 that suspends long materials for the next process.
It has an appropriate length so that a large number of transport frames 2 can be stored so that they can be transported while following each other one after another. Further, above the series of surface treatment tank rows C, there is a crane 14 that reciprocates along the rails 13.

Therefore, in the workshop A on the long material supply side, after supporting the empty transport frame 2 with the collapsed lodging frame 3, a large number of long materials 1 are supplied onto the undulating frame 3 and attached to the transport frame 2. In a series of surface treatment tank rows C in which the undulating frame 3 is erected and the transport frame 2 with the long material 1 attached thereto is lifted upward and delivered to and stored in the first storage shelf B, After being treated by immersing the long material 1 in a vertically suspended state in each surface treatment tank, it is sequentially sent to the second storage shelf D, where it is stored. In the workshop where long materials are removed, the second material received in the undulating frame 4 is
The leading transport frame 2 of the storage shelf D is lowered from above to near the floor by lowering the undulating frame 4, and the long material 1 is removed from the transport frame 2, and then the transport frame 2 is lowered. It is removed from the frame 4 and returned to the workshop A on the long material supply side.

In the return method according to the present invention, the empty conveyance frame 2 removed from the undulating frame 4 is transferred to a surface treatment tank row C in which the longitudinal direction of the conveyance frame is a series in the long material removal side of the surface treatment line.
Turn 90 degrees so that it is parallel to the longitudinal direction. The direction may be changed immediately after the transport frame 2 is moved above or below the lying undulating frame 4, or after it is moved upward or downward and stored once. It's okay. In the example shown in FIG. 1, the empty conveyance frame 2 is lowered by the lifting device 15, transferred onto the first conveyor 16 following the lifting device 15, and the second storage shelf D on the removal side is moved.
The empty transport frame 2 is then transferred downward, and the empty transport frame 2 is turned 90 degrees in the space below the second storage shelf D by the direction changing device 17. The example shown in FIG. 2 is a lifting conversion device 18 that has both lifting and turning operations, and immediately after lifting or lowering an empty transport frame 2, the direction is changed by 90 degrees around one end of the transport frame 2 in the longitudinal direction. It is something to do. After the empty conveyance frame 2 was turned 90 degrees in this manner, it was transferred onto the second conveyor 19 that guides the empty conveyor frame 2 from the work place E on the long material removal side to the work place A on the long material supply side, as shown in Figure 1. An empty transport frame 2 is placed and returned to the long material supply side. In addition, the second conveyor 19
That is, as shown in FIGS. 3 to 5, the return path is provided along the passage 20 provided under the bottom wall of the series of surface treatment tank rows C, or along the bottom or top of the side wall. In summary, it is returned along the tank walls of a series of surface treatment tank rows C.

After returning the empty transport frame 2 to the long material supply side through the return path as described above, the empty transport frame 2 is returned to its original state by 90 degrees and transferred to the undulating frame 3 on the long material supply side. Although it is hung horizontally, in this case, either it immediately rotates 90 degrees backwards, or it is stored once and then rotates 90 degrees backwards and moves up and down. In the example shown in Figure 1, after returning the empty transport frame, the first
Immediately below the storage shelf B, the empty conveyance frame 2 is turned 90 degrees in the space below the first storage shelf B using the direction changing device 21 having the same structure as described above, and is transferred to the third conveyor 22 for storage. Then, it is similarly raised by the lifting device 23 and supplied to the undulating frame 3. In the example shown in FIG. 2, the elevating and lowering converting device 24 similar to that described above turns the conveying frame 90 degrees around one end in the longitudinal direction and raises or lowers the conveying frame, and immediately supplies the conveying frame to the undulating frame 3.

Note that the direction changing devices 17 and 21 in FIG.
The direction changing devices 17 and 21 are configured to rotate by 90 degrees and move up and down. Furthermore, since the conveyor frame 2 has a long material hanging jig 25 vertically disposed on its lower surface to hold the long material 1, the second conveyor 19 has a pair of endless chains as shown in FIG. Stretch them parallel to each other with a certain distance between them.

In any of the above embodiments, an empty transport frame is
These 90 degree rotations are performed within the surface treatment line.

This invention returns an empty transport frame 2 by the above method, and after the empty transport frame 2 is removed from the undulating frame 4, it is lowered or raised from the height at which the undulating frame 4 falls, Next, the direction is changed and the empty conveyance frame 2 is returned to the long material supply side along the tank wall of a series of surface treatment tank rows in the surface treatment line, and then reversed on the long material supply side. The device for realizing the method of the present invention is a lifting device and a direction changing device, or a device that combines lifting and turning, as well as a return path along the tank wall of a series of surface treatment tank rows. This is achieved by a conveyor that In addition, since the materials are returned with a simple movement, there is no need for waiting time and the return time is shortened. For example, the transport frame can be successively laid horizontally on the undulating frame on the elongated material supply side without providing a storage section. Furthermore, the returned transport frame is rotated 90 degrees within the surface treatment line so that its longitudinal direction is parallel to the longitudinal direction of the line, and is rotated along the tank walls of a series of surface treatment tank rows in the surface treatment line. Since the empty transport frame is transported, there is no problem with the surface treatment process above the surface treatment line, and it can be returned from the long material removal side to the long material supply side. The installation area of equipment can be reduced. Also,
If the return path of the transport frame is provided under the bottom wall of the tank, the installation area of the equipment can be minimized, but even if the return path is provided along the side wall of the tank, the width is narrow, so It is installed in almost the same way as when installed in .

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an example of the method for returning a surface treatment conveyance frame according to the present invention following the surface treatment process, and FIG. 2 is a plan view diagrammatically showing another example of the return method. Fig. 3 is a cross-sectional view of the example shown in Fig. 1, Fig. 4 is a cross-sectional view of the example shown in Fig. 2, Fig. 5 is a cross-sectional view of another similar example method, and Fig. 6 is a cross-sectional view of the example shown in Fig. 2. FIG. 3 is a perspective view showing a state of changing direction. A... Work place on the long material supply side, B... First storage shelf,
C...Series of surface treatment tank rows, D...Second storage shelf, E...
Work place on the long material removal side, 1... Long material, 2... Conveyance frame, 3, 4... Lifting frame, 15, 23... Lifting device, 1
6... first conveyor, 17, 21... direction change device,
18, 24... Elevating/lowering conversion device, 19... Second conveyor, 20... Passage.

Claims (1)

[Claims] 1. A long material supply workplace, a first storage shelf on the long material supply side, a series of surface treatment tank rows, a second storage shelf on the long material removal side, and a long material removal workplace. In the surface treatment line, in which the long materials are installed sequentially in the longitudinal direction, a transport frame that suspends the long materials is transported along the upper part of the surface treatment line in the long material side work area, and the long materials are sequentially surface treated. The surface-treated long material is removed from the transport frame at the long material removal worksite, and when the empty transport frame from which the long material has been removed is returned to the long material supply worksite, the empty transport frame is inside the long material removal workshop, turn the empty transport frame 90 degrees so that the longitudinal direction is parallel to the longitudinal direction of the surface treatment line, and move the empty transport frame along the surface of the surface treatment line. The process is carried out along the side walls or the bottom wall of the processing tank row to a long material supplying work area, and inside the work area, the empty transport frame is rotated 90 degrees perpendicularly to the surface treatment line. Features a method for returning transport frames for surface treatment. 2. Immediately after removing the surface-treated long material from the transport frame, the empty transport frame is turned 90 degrees around one end in the longitudinal direction as the center point, as set forth in claim 1. How to return the transport frame for surface treatment. 3 After removing the surface-treated long material from the transport frame, transport the empty transport frame perpendicular to the surface treatment line to the bottom of the second storage shelf on the long material removal side. 2. A method for returning a surface treatment transport frame according to claim 1, wherein the direction is changed by a degree.