JPH0657494A - Conveyor for dipping line - Google Patents

Abstract

PURPOSE:To provide a conveyor for the dipping line capable of freely changing the conveying and treating conditions of a work and with the setting space reduced. CONSTITUTION:The circulating passages 13 and 14 of a conveyor crane are respectively provided on both sides of a treating line 1 formed by arranging plural dipping tanks in series. The crane of one passage and the crane of the other passage are synchronously operated, and the left and right cranes are simultaneously operated or operated by the completely separate programs. Consequently, the conveying condition is appropriately changed in accordance with the size of a work A and the procedure.

Description

Detailed Description of the Invention

[0001]

This invention relates to a work (workpiece).
The present invention relates to an improvement of a dipping treatment line transporting device for transporting along a linear treatment line.

[0002]

2. Description of the Related Art Generally, when a work (object to be processed) is immersed in a processing solution in a liquid tank for surface treatment such as electrolysis or cleaning, the object to be processed is suspended by a carrying crane to perform each immersion treatment. Transfer between liquid tanks. For example, in the electrolytic treatment or cleaning process of metal products (aluminum sashes, aluminum parts, car bodies, car parts, etc.), the object to be processed (panels, angle materials, processed products, etc.) is suspended below the lifting crane. In order to perform a series of immersion treatments such as degreasing, washing with water, dismutation, washing with water, electrodeposition coating, and washing with water, it is sequentially fed along the treatment line. Since such a processing line has a configuration in which a large number of immersion processing liquid tanks capable of immersing large parts are connected in series, it is often a wide and long line.

For this reason, the conventional immersion processing line transfer device has been designed to transfer a work by means of a large garter crane that extends across the processing line.

[0004]

The above-mentioned conventional transfer device has a drawback that the space occupied by the return path for circulating the crane that has passed through the immersion processing line to the load side is very large. . That is, as shown in the principle explanatory diagram of FIG. 5, in the conventional apparatus, the return path 101 having the same width and the same length or more is provided in parallel with the immersion processing line 100 having the width = W and the length = L, and Curved road 1 for turning
02 and 102 must be provided at both ends, and as a whole, an occupied area of 2 to 3 times the floor area of the processing line 100 is required.

Since the actual width and length of the processing line 100 are W (width) = 8 to 10 m L (length) = 30 to 50 m, an extremely wide space is occupied. become. In addition, the conventional apparatus also has a drawback that the transport conditions cannot be changed depending on the size of the work and the processing content.

[0006] For example, when pulling up a large chassis frame that has undergone immersion treatment, change the suspension posture to improve the "draining" of the processing liquid. It is desirable to be able to handle workpieces under different dipping conditions and to convey them separately.
However, the conventional device cannot realize such an operating state and is not suitable for so-called high-mix low-volume production.

In view of the above points, an object of the present invention is to provide a carrier for a dipping process line, in which the conditions for carrying and treating the work can be freely changed and the installation space is small.

[0008]

In order to achieve the above-mentioned object, the dipping treatment line conveying apparatus of the present invention has a circulation traveling path of a conveying crane on both sides of a treating line in which a plurality of dipping tanks are connected in series. It is provided, and the crane on one circulation traveling path and the crane on the other circulation traveling path are configured to be able to operate in synchronization with each other, and the left and right cranes are operated integrally, or they are operated by completely different programs. The transfer conditions can be changed appropriately according to the size of the work and the processing content.

[0009]

[Operation] A plurality of elevator cranes (about 1 to 5) are installed on the left and right traveling paths, respectively, and the cranes on both traveling paths are respectively selected according to the type of work (object to be processed) and its processing content. Operate independently or synchronously. When two left and right units are operating synchronously, for example, an elevating and lowering crane for the left and right traveling paths that departs from the road side can be constructed by suspending the grips of carrier bars with large panels suspended by the left and right cranes. It moves along the treatment line as if it were a crane, and performs a surface treatment such as electrolytic treatment in a predetermined immersion layer. However, in this case, the raising and lowering positions of the left and right cranes may be slightly changed to appropriately control the posture of the suspended work and adjust the immersion condition.

On the other hand, when the two left and right units operate independently of each other,
For example, the left and right elevating and lowering cranes suspend each work, and the coating process is performed in liquid tanks of different colors. For example, the position and time of the left and right of the processing line are completely different. After completing the series of processing, each crane that has released the work in the unloading section circulates to the load side through each return path, and carries the work in synchronous or independent operation according to the next operation program. repeat. Here, since the width of the return path is much narrower than the conventional device (about 1/4) and installed above the processing line, the space required for the circulation of the crane is substantially reduced. It is zero. Therefore, flexible treatment is possible, and efficient treatment is performed in a compact dipping treatment line.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described based on an embodiment shown in the accompanying drawings. FIG. 1 is a front view showing the entire configuration of a conveyor device for an immersion treatment line of the present application, FIG. 2 is a top view showing a crane traveling path of the present application apparatus, FIG. 3 is a sectional view of a crane circulation traveling path, and FIG. FIG. 5 is a principle explanatory diagram showing a crane traveling path in a conventional immersion processing line carrier.

In FIGS. 1 and 2, reference numeral 1 denotes a treatment line for mainly performing electrolytic treatment. The treatment line 1 comprises a plurality of immersion treatment liquid tanks (hereinafter, simply referred to as liquid tanks) E in series, and an upstream end thereof. The loading section 2 is provided in the section, and the unloading section 3 is provided in the downstream end section. The liquid tank E is composed of a rectangular parallelepiped that is long in the transport direction of the line 1 and stores various processing liquids. That is, in the liquid tank E, various treatment liquids such as a hydroxide solution, water, hot water, and a paint are stored according to treatment contents such as degreasing, washing with dismut water, and electrodeposition coating.

The loading unit 2 suspends the work A sequentially transferred by a belt conveyor on one or both of left and right lifting cranes (hereinafter, simply referred to as cranes) 11 and 12 depending on the size and processing content. It can be hung and can be started to be transported along the processing line 1. However, in this embodiment, a basket or a pallet containing a plurality of works A is gripped by a chuck C described later and conveyed.

Here, circulation traveling paths 13 and 14 for the cranes 11 and 12 are provided on both sides of the processing line 1, respectively. That is, traveling paths (traveling rails) 13a, 14a are laid above the inside of the processing line 1, and
Return paths 13b and 14b parallel to the traveling paths 13a and 14a
However, the left and right side edge portions of the processing line 1 (running paths 13a, 14
outside). That is,
As can be seen from the top view of FIG. 2, the circulating traveling paths 13 and 14 of the cranes 11 and 12 and the processing line 1 are almost overlapped with each other. Therefore, unlike the conventional apparatus, the crane return path does not protrude from the processing line, and there is no fear of occupying a space equal to or larger than the processing line. Further, since the curved road R that changes the direction from the traveling road to the return road also has an extremely small radius of curvature, the occupation ratio of the floor area due to the installation of the traveling roads of the cranes 11 and 12 is practically zero.

The running paths (running rails) 13a, 14a
The rack surfaces 13c and 14c provided on both sides of the
Like the traveling base B of the cranes 11 and 12₁, B₂To
The provided pinion gears P and P are in mesh with each other.
It Then, the pinion gears P, P (motor M₁Close to
One is the driving gear, and the farthest is the driven gear.
Ta M₁, M₂By driving with the₁, B
₂And chucks C, C suspended below it,
It can be moved along 13a and 14a.
The chucks C and C of the cranes 11 and 12 are respectively raised.
Descending motor M₃, M _FourSo that it can be raised and lowered and opened and closed by
Made of pallets and baskets containing work A
You can "grip" the outside from the outside.

The circulation running paths 13 and 1 configured as described above
If the work A to be carried in 4 is a large pallet or basket (for example, one that incorporates wide parts such as a chassis frame or a large panel), the left and right lifting cranes 1
Set the operation mode of 1 and 12 to synchronous mode, and work A
It is configured so that it can be lifted and transferred while being held and suspended horizontally by two cranes on both sides. That is, in this case, the left and right lifting cranes 11, 12
Operates essentially as if it were a crane,
It is possible to realize the same transport function as the conventional one. However, when the work A is pulled up from the liquid tank E, the left and right elevating cranes 11 and 12 are alternately moved up and down to swing the work A to improve its "draining", or a similar operation is performed to lift the work A. It can be swung in the liquid tank E to promote the electrolytic treatment action or the like.

On the other hand, if the work A is a small item (for example, a pallet having small angle members, etc.), the operation modes of the left and right cranes 11 and 12 are set to the independent modes, and different types of work A are left and right. It is configured so that it can be suspended separately, and the work A can be lifted / lowered and transferred by an independent program. In this case, the cranes 11 and 1
2 conveys and processes each work A according to each operation program, and the processing line 1 is substantially equivalent to two lines having different contents being arranged in parallel. Therefore, it is possible to easily construct a high-mix low-volume production system that simultaneously performs two types of processing on one processing line.

In the above embodiment, the work A conveyed to the loading section 2 is held by the chucks C of the left and right cranes 11 and 12 and suspended, and according to a predetermined program.
The dipping treatment liquid tank E is sequentially passed along the treatment line 1. At this time, if the work A is of a large size, the left and right two cranes 11 and 12 are operated synchronously, and the two unloading units 3 repeat lifting and carrying as a pair of cranes.
Will be reached.

If the work A is small, the left and right two cranes 11 and 12 are operated independently, and they are immersed in different liquid tanks E according to different programs and reach the unloading section 3. Becomes The cranes 11 and 12 that have reached the unloading section 3 return to the loading section 2 through the return paths 11b and 12b.
Are disposed above the inside of the processing line 1 and therefore occupy substantially no floor space.

[0020]

As described above, in the immersion processing line conveying apparatus of the present invention, the circulation traveling paths of the conveying crane are provided on both sides of the processing line in which a plurality of immersion tanks are connected in series, and one circulation traveling path is provided. , And the crane on the other circulation path can be operated in synchronization with each other, and the circulation path of the transfer crane overlaps with the processing line to save floor space, and the left and right cranes operate integrally. Or
The transport conditions can be appropriately changed according to the size of the work and the processing content by operating with a completely separate program.

For this reason, it is possible to construct a dipping treatment line which is compact and suitable for a wide variety of small quantities, and has a great effect on productivity improvement in various surface treatment processes such as cleaning and electrolytic treatment.

[Brief description of drawings]

FIG. 1 is a front view showing an overall configuration of a conveyor device for an immersion treatment line of the present application.

FIG. 2 is a top view showing a crane circulation traveling path of the device of the present application.

FIG. 3 is a cross-sectional view of a crane circulation path of the device of the present application.

FIG. 4 is a principle explanatory view showing posture control of a work by two cranes.

FIG. 5 is a principle configuration diagram of a crane traveling path in a conventional immersion processing line conveying device.

[Explanation of symbols]

 1 Processing Line 2 Loading Section 3 Unloading Section 11, 12 Transfer Crane 13, 14 Circulation Traveling Path 13a, 14a Traveling Path 13b, 14b Return Path C Chuck A Workpiece (Workpiece, Basket, Pallet)

Claims (1)

[Claims] 1. A circulation traveling path of a transfer crane is provided on each side of a processing line formed by connecting a plurality of immersion tanks in series,
Also, a conveyor for an immersion treatment line, characterized in that a crane on one circulation traveling path and a crane on the other circulation traveling path are configured to be able to operate in synchronization with each other.