JP3291537B2 - Integrated production line for products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated production line for a product, in which separate processing lines are provided before and after a plating line.

[0002]

2. Description of the Related Art For example, a cylinder block for an internal combustion engine made of an aluminum alloy is subjected to chrome plating or the like on a surface of a bore portion thereof. For the purpose, pretreatment (base treatment) such as degreasing treatment, alkali etching treatment, mixed acid etching treatment, and alumite treatment is performed.

By the way, in addition to a plating station for plating a work, a processing station for performing each of the above pre-treatments on the work is arranged in parallel to form a plating line. A surface treatment apparatus has been proposed which automatically performs transfer between processing stations to perform a required surface treatment on the workpiece, and is already in practical use.

[0004]

By the way, the plating process at the plating station inevitably requires a predetermined time, which is longer and shorter than the processing time at other stations. Therefore, there is a limit in shortening the time required for the surface treatment of the workpiece to achieve high speed.

Therefore, when planning an integrated production line including a plating line, the processing time in the plating line is longer than the processing time in the other lines, so that the overall line speed is restricted by the speed of the plating line. This causes a problem that the production efficiency is deteriorated.

For example, in the surface treatment of the bore of a cylinder block for a V-type engine having a symmetrical shape, adopting a structure in which the surface treatment is performed simultaneously on the bores of the left and right banks increases the size of the apparatus and increases the cost. There were also problems.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to improve the production efficiency by realizing the adaptation of the plating line speed to another line. It is an object of the present invention to provide an integrated production line for products that can reduce the size and cost of products.

[0008]

In order to achieve the above-mentioned object, the present invention provides another processing line before and after a plating line formed by juxtaposing a plurality of different processing stations including a plating station. In the integrated production line of a product in which the work is plated by holding the work with a work chuck and transferring between the processing stations in the plating line, a plurality of the work chucks are provided, and a part of the work chuck is provided. A return line is provided for returning a workpiece subjected to plating to a predetermined processing station.

[0009]

According to the present invention, since different processes can be simultaneously and concurrently performed on a plurality of workpieces held by a plurality of workpiece chucks, the moving distance and the moving time of each workpiece chuck can be improved. It is possible to shorten the speed of the plating line and adapt it to the speed of other lines, thereby increasing the speed of the integrated production line and improving the production efficiency.

Further, for example, after a surface treatment is performed on only one side of a work having a symmetrical shape, the work is returned to a predetermined processing station via a return line, and a similar surface treatment is performed on the other side. Therefore, the equipment can be operated rationally, and the size and cost of the device can be reduced.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a configuration diagram of an integrated manufacturing line according to the present invention, and FIG. 2 is a cross-sectional view showing the configuration of each processing unit of a plating station.

The integrated production line according to the present embodiment is a production line for a two-cycle engine, which includes a cylinder processing line before and after a plating line L2, a temperature control line, and a honing processing line (all of which are not available). (Shown).

The plating line L2 is for applying chrome or nickel plating to the surface of the bore of the cylinder block of the engine.
From the left, a single degreasing station A, an alkali etching station B, a mixed acid etching station C, an alumite processing station D, a plating station E, and an air blow station F are arranged. Washing tanks 1-1, 1-2, 2-1 and 2-2, 3-1 and 3-2, 4
-1, 4-2, 5-1 and 5-2 are respectively provided. A work input section 6 is provided at the leftmost end of the plating line L2, and a work output section 7 is provided at the rightmost end.

In the plating line L2 according to this embodiment, for example, after returning only one side of the cylinder block W for a V-type engine having a symmetrical shape, the cylinder block W is returned to a position before the alkali etching station B. A line 10 is provided.

Further, a rail 8 is horizontally installed above the plating line L2, and three work chucks 9-1, 9-2, 9-3 are supported on the rail 8 so as to be horizontally movable. I have.

Here, the configurations of the alkali etching station B, the mixed acid etching station C, the alumite processing station D, and the plating station E (the configurations of these stations B to E are common) will be described with reference to FIG.

As shown, a tank 1 containing a processing liquid
A hollow support block 15 is mounted on the support 4, and two cylinder blocks W (only one is shown) are pressed on the support block 15 by a work holding cylinder 16.

[0019] Also, the bore portion W ₁ of each cylinder block W and faces the cylindrical electrode 17 from below, the electrode 17
Is connected to a liquid supply pipe 18. Further, on the side of the support block 15, a bore portion W of the cylinder block W is provided.
A liquid discharge pipe 19 communicating with the inside ₁ is connected. The liquid supply pipe 18 is formed of a copper pipe having an inner surface rubber-lined, and is electrically connected to a rectifier (not shown).

The cylinder block W has a spark plug mounting hole W ₂ , an exhaust port W ₃ and a scavenging port W _4.
Are open, but the cylinder block W
For treatment liquid bore W ₁ is filled, the spark plug mounting hole W _2, exhaust ports W ₃ and the transfer ports W ₄
Are closed and sealed by seal cylinders 20, 21, 22 respectively.

Next, the surface treatment performed on the cylinder block W by the main plating line L2 will be described. The following description focuses on the flow of a single cylinder block W on the line.

When the cylinder block W is set in the work input section 6 provided at the left end of the line shown in FIG. 1, the work chuck 9-1 is lowered, and the work chuck 9-1 is moved downward. After grasping, the cylinder block W is lifted to lift the cylinder block W.

Thereafter, all the work chucks 9-1, 9-2, 9-3 are integrally moved along the rail 8 by a predetermined amount in the direction of arrow a (rightward) in FIG. When the cylinder block W supported by the work chuck 9-1 is positioned on the degreasing station A, the movement of all the work chucks 9-1, 9-2, and 9-3 is stopped, and the cylinder block W is stopped. Is lowered and immersed in the degreasing liquid of the degreasing station A for a predetermined time to perform a degreasing treatment.

The cylinder block W, which has been degreased in the degreasing station A, is sequentially immersed in the rinsing water in the rinsing tanks 1-1 and 1-2 by the same operation as described above, and is rinsed with water. Etching station B
Transported to

[0025] In the alkali etching station B, bore W ₁ of the surface of the cylinder block W is activated by alkali etching. Then, the cylinder block W on which the alkali etching has been performed is placed in the washing tank 2-
Are sequentially immersed in the washing water in 1,2-2 been washed, it is transported to the next mixed acid etching station C, a large number of recesses are formed on the surface of the bore portion W ₁ are mixed acid etched in該混acid etching station C You.

The cylinder block W having been subjected to the mixed acid etching process is transferred to the washing tank 3-1 and released from being supported by the work chuck 9-1.
1 is mounted on a support table (not shown).

Thereafter, all the work chucks 9-1 and 9
2 and 9-3 move in the direction of arrow b (left) in FIG. 1 along the rail 8 and return to the position shown in the drawing, and the cylinder block W left in the washing tank 3-1 is replaced with the next work chuck 9 2 is carried in the direction of the arrow a (rightward) in FIG. 1, sequentially immersed in washing water in the washing tanks 3-1 and 3-2, washed with water, and then carried to the next alumite processing station D. , where oxide film on anodized the surface of the bore portion W ₁ is a thin layer coating. The alumite-treated cylinder block W is sequentially immersed in washing water in the washing tanks 4-1 and 4-2, washed with water, and transported to the next plating station E.

In the plating station E, as shown in FIG.
_2, exhaust ports W ₃ and the scavenging port W ₄ is closed respectively by the seal cylinder 20, 21, 22. And, this is the bore W ₁ of the cylinder block W while being supplied with chrome or nickel plating solution through the liquid supply pipe 18 and the electrode 17, the electrode 17 via the liquid supply pipe 18 from the rectifier (not shown) electrically Is supplied to the cylinder bore W ₁
Is plated with chrome.

The cylinder block W on which the plating process has been completed is transferred to the washing tank 5-1 and released from being supported by the work chuck 9-2, and is placed on a support (not shown) of the washing tank 5-1. Is done.

Thereafter, all the work chucks 9-1 and 9
2 and 9-3 again move along the rail 8 in the direction of arrow b (left) in FIG. 1 and return to the position shown in the drawing, and the cylinder block W left in the washing tank 5-1 is replaced with the next work chuck 9-
3 and is transported in the direction of arrow a (rightward) in FIG.
The pieces are sequentially immersed in the washing water in the washing tanks 5-1 and 5-2, washed with water, and conveyed to the next air blow station F where they are blown with air to remove moisture, dried and processed to carry out the work. Reaches 7.

Here, when the cylinder block W is a cylinder block for a V-type engine having a symmetrical shape, the surface treatment is performed on the bore on one side of the cylinder block W through the above steps. Then, the cylinder block W whose one side of the bore is surface-treated is connected to the return line 10.
And returned before the alkaline etching station B.

The cylinder block W returned in front of the alkali etching station B via the return line 10 is subjected to the same processing as described above, and the other one of the bores is similarly surface-treated.

The operation of the apparatus according to the flow on the plating line L2 has been described with particular attention to one cylinder block W. However, in actuality, all the work chucks 9-1, 9-2, 9 are used. -3 respectively support the cylinder blocks W, and different processes are simultaneously and concurrently performed on the plurality of cylinder blocks W. For this reason, the surface-treated cylinder blocks W are successively carried out from the plating line L2 at a time interval of about 1/3 of the conventional one, and the work blocks 9-1, 9-2, and 9-3 are removed. The moving distance and the moving time are also shortened, and together, the speed of the plating line L2 is increased, and even when the plating line L2 is incorporated in the integrated production line, the speed of the plating line L2 is changed to another speed. Can be adapted to the speed of the line,
As a result, the speed of the entire integrated production line can be increased and the production efficiency can be improved.

Further, in this embodiment, the symmetrical V
After the surface treatment of only one side of the cylinder block W for the die engine, the cylinder block W is returned to the front of a predetermined processing station (alkali etching station B) via the return line 10 and the same surface treatment is performed on the other side. Can be performed through the same processing stations B to F, so that the equipment can be operated rationally, and the size and cost of the apparatus can be reduced.

[0035]

As is apparent from the above description, according to the present invention, another processing line is provided before and after a plating line formed by arranging a plurality of different processing stations including a plating station in parallel. In the integrated production line of a product in which the work is plated by holding the work with a work chuck and transferring between the processing stations in the plating line, a plurality of the work chucks are provided, and a part of the work chuck is provided. A return line is provided to return the work that has been subjected to plating to a predetermined processing station, so that the speed of the plating line can be adapted to other lines to improve production efficiency and reduce the size of the equipment. This has the effect of achieving cost reduction and cost reduction.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an integrated manufacturing line according to the present invention.

FIG. 2 is a cross-sectional view illustrating a configuration of each processing unit of the plating station.

[Explanation of symbols]

 A Degreasing Station B Alkaline Etching Station C Mixed Acid Etching Station D Alumite Processing Station E Plating Station F Air Blow Station L2 Plating Line W Cylinder Block (Work) 9-1 to 9-7 Work Chuck 10 Return Line

Claims (1)

(57) [Claims] 1. A plurality of different stations including a plating station.
Separate processing lines are installed before and after the plating line composed of processing stations in parallel ,
In the work, grip the work with the work chuck.
To transfer between processing stations.
In the integrated production line of the product to plate the work by, providing a plurality of the work chuck,
The workpiece that has been plated by
Integrated production line with a return line that returns the product