JPS6246449B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for returning a workpiece support used for surface treatment of workpieces such as aluminum or aluminum alloy shapes and plates.

Conventionally, in this type of surface treatment, the objects to be treated are suspended on a conductive support, and the objects are sequentially treated in a series of processing steps on a single line while the support is transported by a crane. Because I am doing
The entire line becomes longer, which requires a larger factory site, a more complex management and control system, and a means to return the support to the starting end after removing the workpiece at the end is required. To solve this problem, we added another route to this line to return it to the support.
Methods have been proposed to return the support using this method, or to transport it back along the surface treatment line from the end to the start using a transport crane. Since an additional route is added, extra space is required, and in the latter case, the support that suspends the workpiece and the support that does not suspend the workpiece must be transported using the same crane, which means that the support during return The crane travel program becomes complicated, process management becomes difficult, work efficiency is hindered, and unnecessary space is required, which causes problems in terms of facilities and costs. There were disadvantages such as an increased burden on employees.

This invention improves the drawbacks of the above conventional ones,
The entire process is carried out by two lines parallel to each other.
In the return process, the supply zone and the carry-out zone of the object to be processed are placed close to each other and at almost the same position, so that the support from which the object to be processed is removed is transferred onto the first storage section on the supply zone side, and the This allows for easy attachment of processed materials.

Hereinafter, the method of the present invention will be explained with reference to an embodiment shown in the drawings. FIG. 1 is a schematic plan view of a surface treatment line based on an embodiment of the method of the present invention.

This surface treatment line consists of processing steps such as degreasing, etching, smut removal, anodic oxide film formation, coloring, painting, drying, and appropriate water washing, and is turned back in the middle to form a first line A and a second line that are parallel to each other. It is composed of B.

A supply zone C is provided at the starting end of the first line A, where the workpiece is attached to a support and prepared for transport to the first line, and between this supply zone C and the first line A is a first storage section D will be established.

A carry-out zone E is provided at the end of the second line B, where the workpiece 7 that has undergone surface treatment is removed from the support 1, and a second storage section F is provided between the carry-out zone E and the second line. establish.

Although the above-mentioned supply zone C and discharge zone E are provided in close positions, in the illustrated embodiment, the collection area 11 for the workpieces 7 is provided in the direction of the first line side of the discharge zone E. To,
Although they have been displaced by the space occupied by the accumulation site 11, they are still located almost close to each other.

As shown in FIG. 4, the support 1 has a workpiece holding part 21 on the lower surface of a long horizontal bar 20, and a pair of locking protrusions 22 on the upper surface. In order to attach the object to be processed 7 to the clamping portion 21, any known means can be used as appropriate.

In the supply zone C and unloading zone E of the first line A, lifting devices G and _G1 are installed to lift and lower the support 1 between each work area and the first and second storage sections D and F. As shown in FIG. 5, the lifting and lowering devices G _{and G1} are provided with a lifting frame 4 having a support locking portion 3 on a rotating frame 2 that rotates around a shaft mounting portion 17 so as to be able to move up and down freely. This combination corresponds to the upper and lower support shelves 5, 5a, 6, and 6a of the first and second storage sections D and F.

A support 1 with an unprocessed object 7 suspended thereon is placed on the lower support shelf 5a in the first storage section D.
A conveyor 8 is provided to sequentially transport from the supply zone C to the first line side, and an empty support 1 that does not suspend the workpiece 7 is placed on the upper support shelf 5, and from the first line 4 to the supply zone. A conveyor 9 is provided to sequentially convey the objects.

As shown in FIG. 2b, on the lower support shelf 6a in the second storage part F, the support 1 suspending the workpiece 7 whose surface treatment has been completed is placed, and the support body 1 is placed in order from the 2nd line B side. Conveyor 1 conveying to the unloading zone E side
0, and the upper support shelf 6 is provided with a conveyor 15 on which the empty support 1 from which the workpiece 7 has been removed is placed and conveyed to the second line B side.

In order to return the empty support body 1 on the second storage section conveyor 15 to the first storage section D on the first line side, a return cart H that reciprocates across this conveyor 15 and the supply zone C is used. This return cart H has an elevating body 23 which is provided with a locking part 19 for locking protrusions 22, 22 of the support body 1 on the lower surface of a main body part 18 suspended from a rail 17 installed above.
There is a rail 17 that is provided with a
As shown in Figures 3 and 3, since the first storage part D and the second storage part F are displaced, the first storage part D
, but extends above the supply zone C.

Therefore, in the illustrated embodiment, the empty supports 1 conveyed onto the supply zone C are
In order to transport the empty supports 1 to the storage section D, as shown in FIG.
An auxiliary conveyor 12 is provided to convey the materials to the first line side.

A lifter 14 is provided between the auxiliary shelf 13 and the upper support shelf 5 to transfer the empty support 1 that has reached the first line side end of the auxiliary conveyor 12 to the conveyor 9 of the upper support shelf 5. This lifter 14 can move up and down between the shelves 5 and 13 along an upright guide frame 16.

On the other hand, at the turning point R, the terminal end of the first line A and the starting end of the second line B have storage parts D ₁ ,
F ₁ is provided, and both storage parts D _{1 and} F 1 are provided in order to convey the support 1 suspending the workpiece 7 from the storage part D ₁ of the first line A to the storage part F _{1 of} the second line B. A first truck 24 is used which travels back and forth over the area, and the traveling rail 25 of the truck 24 is provided across both storage parts D ₁ and F ₁ .

In addition, in the embodiment, a third surface treatment line I is provided at the turning point R, and the first line A
A process in which the processed object 7 is processed in the third line I and then subjected to the process in the second line B, and a process in which it is immediately transported from the first line A to the second line B and processed. You can choose.

In this third line I, the first and second lines A and B
Since the treatment is performed by a method different from the surface treatment in , the structure of the support for suspending the object to be treated 7, the means for suspending the object to be treated, and the means for conveying the support are the same as those in the first and second lines A and B. When the workpiece 7 is transported to the third line I, it is to be removed from the support 1 that has been transported along the first line A at the turning point R. Furthermore, since the workpiece 7 that has been processed on the third line I must be further processed on the second line B, it is attached to the support 1 that is being transported along the second line B at the turning point R. There is a need.

Therefore, at this turning point R, the empty support body 1 from which the workpiece 7 has been removed from the first line side storage section _D1 is transferred to the second line side storage section _F1 .

Therefore, as _shown in _FIG .
27, 27a, the upper conveyor 26 of the first line storage section _D1 conveys the empty support from the third line side to the first line side, and the lower conveyor 26a conveys the support with the workpiece 7 suspended. The body 1 is transported from the first line side to the third line side.

On the other hand, the upper conveyor 27 of the storage section _F1 on the second line side conveys the empty support body 1 from the second line side to the third line side, and the lower conveyor 27a
transports the support 1 with the part to be processed 7 suspended from the third line side to the second line side.

Then, the object to be processed 7 is stored in the first line storage section _D1 .
The support body 1 from which the
In order to transfer to F ₁ , a second trolley 28 that reciprocates across both conveyors 26, 27 above the upper conveyors 26, 27 is used, and its running rail 29 is in a state where it can communicate between both conveyors 26, 27. Provided by

Now, the support body 1 suspending the workpiece 7 processed on the first line A is transferred to the first line side storage area by the transport crane 30 traveling along the first line A.
_D1 , and is first unloaded onto the first line side end of the lower conveyor 26a. The support 1 unloaded onto the lower conveyor 26a is transferred to the third line I side and stands by, where it is transferred to the third line I shown in FIG. The workpiece 7 is sorted into the workpiece 7 which undergoes a step of transferring ink or resist material printed on a thin film onto the workpiece by bringing it into close contact with the workpiece, and the workpiece 7 which proceeds to the second line B without passing through the third line I. Ru.

The workpiece 7 transferred to the third line I is immediately removed from the support 1, and a conveyor J that moves back and forth (in the direction of the arrow in FIG. 6) is used for this removal work. . The carrier J is in the first storage section _D1
It is composed of a cart 32 that runs on a rail 31 provided above, and an elevating body 34 that moves up and down along a guide frame 33 that is suspended and fixed to the cart 32. It has a support part 35 that locks and supports the first locking protrusion 22, and the guide frame 33 and the elevating body 34 are connected to the first storage part.
The elevating body 34 moves between each pair of upper and lower conveyors 26, 26a of _D1 .
It is designed to move up and down between 26a and 26a.

The elevating body 34 is waiting at a lower position at the end of the lower conveyor 26a on the third line side. When the support body 1 that has been transported there on the conveyor 26a stops at the end, the elevating body 34
rises, and its lower end support portion 35 locks the locking protrusion 22 of the support 1 and pulls it up. This lifting is performed until the horizontal bar 20 of the support 1 does not come into contact with the upper conveyor 6, and then, by moving the cart 32 toward the third line, the support 1 is pulled up.
escapes from between the opposing conveyors 6, 6, 6a, 6a to the third line side. Next, the elevating body 34 rises, and the support body 36 of the third line I, which is waiting in a state opposite to the first storage part D ₁ of the first line A, is moved up.
The object to be processed 7 is transferred from the support 1 to the support 36 facing the support 36. This support body 36 is suspended by a cart 38 that runs along a rail 37 provided over the third line I.

Empty support 1 with the object to be processed transferred to the support 36
moves to the first line side with both ends supported by the support parts 35 of the elevating body 34, and moves to the upper conveyor 26.
When the upper conveyor 2 stops at the upper position,
6, and as shown in Figure 6, this conveyor 6
is moved to the left by moving in the direction of arrow C.
Next, the empty support body 1 is supported by a second cart 28 equipped with a support part 39 that can be raised and lowered, and then moved to the first storage part.
D ₁ to the second storage section F ₁ and transferred to the second line B
is sent to the upper conveyor 27 at the starting end of the .

The second storage section F ₁ is provided with a carrier J ₁ similarly to the first storage section D ₁ . The empty support body ₁ transported from the first storage section D1 is transferred to the second storage section _F1.
is lowered onto the upper conveyor 27, and as shown in FIG. 2b, this conveyor 26 moves to the third line side as indicated by arrow D, and is placed in a standby state,
The object to be processed 7 that has been processed in the third line is awaited. Here, the object to be processed 7 that has been processed in the third line I is removed from the support 36 and suspended again on the waiting empty support 1.
The work is done as follows. That is, the elevating body 34a lifts up the empty support body 1 that is waiting on the third line end side of the upper conveyor 27, and the conveyance body _J1 moves to the third line side, so that it is stopped in a stationary state. The empty support body is conveyed to the vicinity of the support body 36 of the third line where the support body 36 is being held. Here, the workpiece 7 that has been processed in the third line I is transferred to the empty support 1 and suspended.

The workpiece 7 reattached to the support body 1 in this manner is lowered to a position corresponding to the lower conveyor 27a by the lowering of the elevating body 34a. Next, the conveyor J ₁ moves toward the second line and is sent to a position above the lower conveyor 27a, and the elevating body 34a further descends to lower the support 1 onto the lower conveyor 27a. Then, it is sent to the second line side end of the lower conveyor 27a to be processed in the second line B, and waits to be transported by the transport crane 30a.

On the other hand, the workpieces 7 to be transferred to the second line B without being processed by the third line are transferred to the first cart 2.
As shown in FIG. 7, this first cart 24 has a gate-like shape as a whole, and has a rail running portion 41 at the upper end of a pair of vertical rails 40, 40. , 41, and a support locking portion 4 at the lower end.
2 and 42, and the rail running section 4 is attached to the rail 25.
1 and 41 are locked and hanging. The rail 25 has a first storage part _D1 and a second storage part D1.
Rail 37 of the third line I connecting with F ₁
and guide frames 33, 33 of each elevating body 34, 34a.
a, and is provided between the first storage section _D1 and the second storage section _F1 , and the first truck 24 is mounted on this rail 2.
It is now possible to travel back and forth along 5.

Such transfer of the support body 1 to the first cart 24 is performed by the carrier J.

That is, since both the objects to be directly transferred to the second line and the objects to be processed to be transferred to the third line are placed on the lower conveyor 26a of the first storage section _D1 by means of supports, The support body 1 suspending the workpiece 7 to be transferred to B is the lifting body 3
4, it is lifted from the lower conveyor 26a, and then, by moving to the third line I side, it is carried onto the support locking parts 42, 42 of the first trolley 24, and is further raised and lowered. By lowering the body 34, it is transferred to the support locking parts 42, 42.

Then, after the elevating body 34 retreats to the first line side, the first truck 24 moves and carries the support body 1 to the second storage section _F1 side.

The support body 1 carried to the second storage part _F1 is transferred onto the lower conveyor 27a by the conveyor _J1 with the elevating body 34a provided in the second storage part _F1 , and is also transferred onto the lower conveyor 27a. By the conveyor 27a,
As shown by arrow H in FIG. 2, it is transported to the second line side and waits for transport by the transport crane 30a together with the workpieces that have passed through the third line I.

Now, the transportation of the support 1 will be explained as follows.

First, in the supply zone C, the lifting frame 4 of the upright lifting device G rises to support the empty support 1 from the upper support shelf 5 of the first storage section D, and then rotates towards the work area and falls down. state. After the object to be processed 7 is attached to the support body 1 in this state, the raising device G is rotated again to raise it. During this rotation, the elevating frame 4 is lowered so that the support body 1 and the lower support shelf 5a correspond to each other. Then, the support 1 with the workpiece 7 suspended in an upright state is transferred to the lower support shelf 5a.

The support body 1 transferred to the lower support shelf 5a is transferred to the first line A side and stands by in preparation for being transported by the transport crane 30.

Support 1 supported by transport crane 30
While processing the workpiece 7 in each process, it is transported to the turning point storage section _D1 at the end of the first line, where it is unloaded onto the lower conveyor 26a. The unloaded support body 1 is transferred to the third line side and transferred to the conveyor J.
Then, it is transferred to the first truck 24 and transferred to the storage section _F1 on the second line side. The transferred support body 1 is transferred from the first cart 24 onto the lower conveyor 27a by the transfer body _J1 , and then transferred to the second line side and waits for transfer by the transfer crane 30a.

Then, the support body 1 supported by the transport crane 30a is transported toward the end of the second line B while processing the workpiece 7 in each step of the second line B, and is transported to the second storage section F. reach.

The supports 1 unloaded onto the lower support shelf 6a in this second storage section F are transferred to the unloading zone E, and the lifting device
After being supported by G ₁ , its rotation causes it to lie down on the work site. In this state, the empty support body 1 from which the object to be processed 7 has been removed is returned to the second storage section F again by the lifting device _G1 that rotates and stands up. The lifting frame 4 of ₁ is the upper support shelf 6
rises in response to

The support body 1 transferred to the upper support shelf 6 is sent to the end on the second line side, and lifted up by the elevating body 23 of the return truck H at this end. The return cart H travels along the rails 17 above the supply zone C, and the auxiliary shelf 13 provided above the supply zone C
Carry the empty support 1 upwards.

The empty supports 1 lowered onto the auxiliary shelf 13 are returned to the first storage part D by the conveyor 12, and are further conveyed by the lifter 14 that moves up and down between the auxiliary shelf 13 and the upper support shelf 5. , the empty support body 1 is transferred onto the upper support shelf 5, and the empty support body 1 transferred onto the upper support shelf 5 is sent to the supply zone C side and is rotated and lowered to the supply zone C by the raising device G. Prepare for the future.

As described above, this invention returns only the empty support from which the object to be processed has been removed to the first line, and returns the empty support to the supply zone located immediately adjacent to the carry-out zone. This eliminates the need for a long dedicated return route that runs parallel to a single row of surface treatment lines as in the past, and also eliminates the need for the use of a surface treatment line for return and return using a transport crane. First, by simplifying process management and increasing the efficiency of surface treatment work, at the same time, by rationalizing the scale of equipment, we aim to make effective use of the limited factory site, which has a significant effect in contributing to cost savings. In addition, only the empty supports are returned and stored on the support with the workpiece attached on the supply zone side, which reduces the overall height of this storage section. However, it can be made compact, and in addition, the risk of the object to be processed falling from a high place can be prevented, and damage to the object to be processed can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a surface treatment line implementing the method of the present invention. Figure 2 is a schematic side view of the
FIG. 3 is a schematic side view of the supply zone and the discharge zone, and FIG. 4 is a front view showing the first and second storage sections. FIG. 5 is a side view of the lifting device, FIG. 6 is a side view of the turning point, and FIG. 7 is the same but a front view of the turning point. A... First line, B... Second line, C... Supply zone, D... First storage section, E... Export zone, F... Second storage section, G... Lifting device, R... Turning point, 1... Support body, 5... Upper support shelf of the first storage part, 5a... Lower support shelf thereof, 6... Upper support shelf of the second storage part, 6a...
Lower support shelf, 7... Workpiece, 8, 9... First line side conveyor, 10, 15... Second line side conveyor, 12... Auxiliary conveyor, 13... Auxiliary shelf, 14...
Lifter, 17...Rail for return trolley.

Claims (1)

[Claims] 1 A surface treatment line consisting of a series of treatment steps,
It consists of a first line and a second line that are turned back midway and are parallel to each other, and the workpiece supply zone at the beginning of the first line and the workpiece discharge zone at the end of the second line are placed close to each other to supply the workpiece. A support to which objects to be processed before being processed in the zone are attached is stored in a first storage section provided between the supply zone and the first line, and the objects to be processed on the support are sequentially processed in the first line. Then, from the turning point, the processed material is transported to the unloading zone while being processed on the second line, and is stored in a second storage section provided between the unloading zone and the second line. ,
After the empty support from which the object to be processed has been removed in the carry-out zone is transported above the support with the object to be processed in the second storage section, it is transferred from this second storage section to the first storage section. A method for returning a support for a processed object, comprising transporting the object to be processed above the support.