JPS5836078B2 - Fully automatic circulation plating device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fully automatic circulation plating device, in which hanging baskets containing products to be electroplated are immersed one after another in each treatment tank, and the products are placed in advance into a circulation path where the products are repeatedly pulled up and moved. The process of supplying hanging baskets and taking them out is fully automated.

The hanger that hangs the product hanging basket and moves up and down and circulates serves as a power supply mediator, placing the anode support part (power receiving part) on top of it, and hanging the hanging basket which becomes the cathode, and controlling the supply and removal position of the hanging basket. By temporarily supporting the anode upward and suspending only the hanging basket, we were able to automate the process of supplying and taking out the hanging basket while the product was in the container in the simplest manner.

This eliminates the need for workers to manually insert and remove products and anodes from the hanging cage in the circulation path.

In addition, a lifting and transporting mechanism has been added to the hanging basket supply and take-out device, allowing products to be inserted and taken out while the hanging basket is lying on its side.
Empty hanging baskets are automatically returned to the product insertion equipment immediately, so each hanging basket that comes out of the circulation system is also mechanically circulated, making loading and unloading of products into and out of the hanging baskets easier. It has become significantly easier.

Next, the structure and embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of an embodiment in which the present invention is applied to an apparatus for plating the inner surface of a coupling for oil country tubular goods.

An OCTG coupling is a short pipe that connects the tip of an OCTG that has been pushed underground to the end of the next OCTG, and has a female thread on the inside.

Although this coupling is of course mass-produced, the internal plating process has conventionally required relatively large amounts of procurement.

By applying this invention, everything except the work of storing the coupling in the hanging cage in advance was automated.

The method of sequentially immersing and circulating product hanging baskets in an oval shaped treatment tank is well known, so the arrangement of the various treatment tanks T in Figure 1 only shows the half that includes the hanging basket supply and take-out equipment. .

In this plan view, the product hanging baskets 1 which circulate above each treatment tank T and move up and down repeatedly for immersion and lifting are shown in places, and the chain conveyor 21 and chain wheel 22 that circulate as supporting and driving devices are shown here and there. , only the lifting column 23 and lifting hydraulic cylinder 24 are shown.

The support and drive mechanism for the hanging cage 1 is shown in FIGS. 2 and below.

The hanging cage feeding device and the taking out device, which are the main features of this invention, are provided at the beginning and end of the arrangement of the processing tank 1, and are each equipped with ancillary equipment, the front view of which is shown in FIG. These will be described later.

Now, in FIG. 1, the support and drive mechanism for the hanging cage 1, which is expressed by a chain conveyor 21, etc., will be explained with reference to FIGS. 2 and 3.

Each hanging basket 1 is hung from a rectangular frame-shaped hanger 2, and is moved up and down and circulated.

Each hanger 2 is horizontally fixed to a vertical truck 4 that moves up and down between the left and right columns of each elevator frame 3.

Each lifting frame 3 has its lower end connected to the ceiling 10a of the base frame 10 and the intermediate floor 1.
They are attached to the upper and lower chain conveyors 21 along each of 0b and lined up at regular intervals, and in this example, they are evenly distributed over the entire length of the circulation path.

The horizontal movement, that is, the circulation, of the elevating frame 3 is of course performed by the vertical chain conveyor 21, but its elevating and lowering operations are carried out by lifting and suspending the rails 6 of the rollers 5 that appear on the back surface of each vertical truck 4.

As shown in the upper part of FIG. 2, the rail 6 has many parts in which the front and back rails are integrated into a common horizontal rectangular frame, but depending on the nature of the front and back processing tanks, separate rails and separate lifting mechanisms may be used.

The hydraulic cylinder 24 in FIG. 1 (plan view) lifts and suspends the front and back rails 6 of about half of the circulation path using many chains 7 and chain wheels 8, and the column z3 is a column for guiding up and down.

When only one hanging basket 1 has a different lifting and lowering operation than the adjacent hanging basket 1, the common rail 6 is cut out or a gap is provided at that position, and a dedicated rail is provided.

The mechanism for hoisting and suspending the rail 6 while keeping it level is a well-known technology and can be left to the designer.

In FIG. 3, the raised position of the hanger 2 is shown by a solid line, and the lowered position is shown by a chain line.

The right side of Figure 2 is the front side, and the left side is the back side, and since this is an explanatory drawing, even though the solid line rail 6 is in the raised position, only the front hanger 2 is drawn in the raised position, and the rear (left) side hanger 2 is drawn in the raised position. 1 shows a state in which the hanging basket 1 is sunk into the processing tank T in the lowered position.

As described above, the lifting frame 3 that raises, lowers, and circulates the hanger 2 is horizontally circulated by the vertical chain conveyor 21 that circulates on a long base frame.

Along the circulation path of this lifting frame 3, there is a positive and negative power supply equipment to the hanger 2.

Conductive plates 9 for sliding load feeding are arranged in parallel along the back (left) side of the base frame intermediate floor 10b in FIG.

Table (right)9. Since there are many positions N where the hanging basket 1 is supplied and taken out and where energization is not required, there are many parts without the conductive plate 9, which are not shown in the figure.

Sliding power supply equipment is provided between each hanger 2 and the conductive plate 9 in FIG. 2, but it is omitted in FIG. 2 because it is well known.

Of course, the hanger 2 receives power only in the lowered position.

On the upper surface of the hanger 2, a conductive plate 9, as shown in FIG.
There is a positive power supply section 13 and a negative power supply section 14 connected to the sliding terminals 11 and 12.

Four legs (power receiving parts) of an anode support part 16 from which an anode rod 15 is suspended are placed on the four inner positive power feeding parts 13 .

Power receiving hooks at the upper end of the hanging basket 1 are hung from the four outer negative power feeding parts 14.

In both cases, the horizontal bar-shaped power receiving part rests on the V-groove power feeding part and the contact is maintained simply by gravity, so attachment and detachment are extremely easy.

The anode support part 16 from which the anode rod 15 is suspended is placed on each hanger 2 in advance with a product to be plated, in this case, a product that matches the arrangement of the oil country tubular coupling in the hanging cage.

In FIGS. 5 and 6, products C are lined up in the hanging basket 1, three at the front and three at the front, seven at each end, and an anode rod 15 is suspended from the core of each product in order to plate the insides of these products.

Therefore, the support section 16 suspends three anode rods 15 at the front and rear.
Place it on hanger 2.

Since there are many hangers 2, the anode support part 1 placed on these
It is also a good idea to have several different types of 6 and use them depending on the product size.

A hanging basket supplying device 17 shown in FIG. 1 hangs the hanging basket 1 containing the product to be plated, in this case a coupling, onto the hanger 2 on which the anode support part 16 is mounted, and the hanging basket 1 containing the plated product is hung thereon. A hanging basket removal device 18 removes the hanging basket 1 from the hanger 2.

The supply device 17 and the take-out device 18 are completely the same device, although their functions are different.

The supply device 17 is operated with the product-filled hanging basket 1 vertically erected.
When approaching the circulation path, as shown in FIGS. 4 and 5, when the two pairs of right and left upper ends of the hanging basket 1 that have been erected enter the corresponding positions on the negative power supply part 13 of the hanger 2, a detection device (not shown) is detected. ) will stop at the signal.

Now, when the hanger 2 is raised, it scoops up the hanging basket 1 and becomes a hanging state, but before that, the hanger 2 rests the anode support part 16 on the anode temporary support member 19 in the raised position.

The anode temporary support material 19 is the first. Figure 2.4 shows the simplest embodiment.

It is simply a simple support arm protruding from the base frame ceiling 10a to the front side and two horizontal support rods 19a, front and rear, fixed in parallel to the direction in which the hanger moves.

The two horizontal support rods 19a are the anode hanging rods 1 of the anode support section 16.
6a receives and supports the protruding ends.

Therefore, as shown in the hanger 2 on the right side of FIG.
When it reaches the lifting position (above the take-out device 18) in this state, both ends of the anode hanging rod 16a are moved above the horizontal support rod 19a of the temporary anode support member 19 as shown on the right side of FIG. will enter.

Therefore, when the hanger 2 stops and descends, the anode support part 16 is received by the temporary support member 19 and remains above, as shown on the left side of FIG. 4, and the hanger 2 hangs only the hanging basket 1 and descends. , and place it in the receiving frame 20 of the suspended basket take-out device 18 that was waiting.

After the hanging basket 1 is placed on the receiving frame 20 (!), it descends a little further and the hanger 2 stops, so that the hook 1a at the upper end of the hanging basket 1 is in a floating state.

Therefore, when the receiving frame 20 is moved from the circulation path, the hanging basket 1 is moved from the hanger 2.

In FIG. 1, the receiving frame 20 on the side of the hanging cage take-out device 18 is shown in a state that it has entered the circulation path, and the receiving frame 20 on the side of the hanging cage supplying device 17 is shown in a state that it is separated from the circulation path.

The receiving frame 20, which received the hanging basket 1 containing the plated product in the circulation path, moves away downward in FIG. Place it on the conveyor 25.

The hanging basket 1 on the conveyor 25 is moved to the product take-out station 26 in a lying position with the side lid facing upward, and is moved horizontally to the standby position a, the product take-out position b, and the hanging basket delivery position C by the lateral movement conveyor 27. move.

The empty hanging basket 1 from which the product has been removed is sent to the product insertion table 29 in a lying position by the hanging basket return mechanism 28.

In this example, as shown in FIG. 8, the return mechanism 28 has an automatic rotating table 30 in the middle of the feed conveyor, and horizontally rotates the hanging basket 1 by 180 degrees while lying down.

As a result, products can be taken out and inserted from the outside of both the product take-out joint 26 and the insertion table 29, and products can be stacked on the outside thereof.

The product insertion stand 29 has exactly the same shape as the takeout unit 26 and is installed symmetrically so that the hanging basket 1 received from the return mechanism 28 is moved to the standby position a, the product insertion position b', and the hanging basket delivery position C. Move laterally.

From there, the receiving frame 20 is passed to the hanging basket supplying device 17, which waits on its side, and the suspended basket 1, which is raised vertically, is passed through the circulation path to the hanger 2.
Proceed to.

On the other hand, the hanger 2 from which the hanging cage 1 has been removed by the hanging cage removal device 18 rises from the solid line position on the left side of FIG. Float and receive.

Then, it continues to move intermittently for circulation together with all the other hangers 2, and when it reaches the upper part of the hanging cage supply device 17, the anode support part 16 is rested on the anode temporary support material 19 there, and only the hanger 2 descends. , and waits for the receiving frame 20 to carry the hanging basket 1.

When the receiving frame 20 brings the hanging basket 1 containing a new product to the hanger 2, the hanger 2 lifts up and hangs the hanging basket 1.
The anode support part 16 that had been deposited is floated and received so that it can be circulated.

In this raised position, the hanger 2 moves along the circulation path, and when it reaches the top of the processing tank T, it descends to immerse the hanging basket 1 in the liquid and moves on, and when moving to the next tank T, it rises, advances, and descends.

In this example, a mechanism is added to slow down the speed at the end of the ascending and descending strokes, but it takes 13 seconds to ascend and stops at the ascending position.
7 seconds to drain, 15 seconds to advance, 10 seconds to descend.
Perform the basic operation in 15 seconds of immersion, 60 seconds in total.

At the end of the series of processing tanks T, the hanger 2 releases the hanging basket 1 and receives the hanging basket containing the new product at the hanging basket supply tray.
Repeat the process of going through the treatment tank again.

Not only the process of circulating and dipping the hanging baskets into each treatment tank, but also the process of supplying and removing products from the circulation path, which used to be laborious and labor-intensive tasks, has been automated, allowing workers to adjust the product according to the automated process. All you have to do is take out the products from the hanging basket and put new products into the hanging basket.

There is no need to enter the circulation path, and it is sufficient to take out and insert the product from the hanging basket of the conveniently installed product takeout/insertion table, and this work can also be mechanized.

The hanging basket 1 shown in Figs. 5 and 6 is laid down horizontally, and on top of a corrugated resin plate 31, seven products (couplings) C are arranged in three rows, and the products (couplings) C are placed on top of the corrugated resin plate 31 to function as a jig. Another resin plate 32
, the products are lined up again in the same way, and the top is closed with a corrugated resin plate 33 which is a lid that closes the open side of the hanging basket 1.
The product was inserted through a three-pronged fork.

Although one embodiment has been described above, the present invention is not limited to this.

The target products and equipment can be varied and applied in a variety of ways without changing the gist of the invention, using the well-known techniques and ingenuity of designers and field engineers.

In particular, the form of the hanger, the lifting frame, its horizontal circulation equipment, the suspension cage supply, the take-out device, the anode temporary support material, etc. can all be designed individually by a mechanical designer to satisfy the respective functions.

This invention has a hanging basket hanger C that rotates around each treatment tank, and has a positive and negative power supply part, and by simply placing the anode side and hanging the hanging basket, electrical and mechanical connections and separations can be made freely. has made automation extremely easy.

At the raised position of the lifting frame, the anode side on which the hanger was placed rests on the anode temporary support material, so even when a long anode rod is passed through a stack of couplings such as oil country tubular couplings, hanging baskets containing products can be easily It is now possible to supply from the side and take out from the side.

In addition, by attaching a lifting and transferring mechanism to each of the hanging basket supply and take-out devices, and adding product take-out and insertion equipment and hanging basket return mechanism that intermittent horizontally move the hanging basket lying on its side, it can be used not only on the immersion circulation path. Individual hanging baskets that are separated from this system also automatically rotate through the product extraction/insertion circuit.

When taking out and inserting products into a hanging basket, when the hanging basket is laid down and inserted from the side, it is advantageous because even if the hanging basket is laid down and loaded from the side, the products can be loaded and unloaded at the same time on a single fork, even if the product is picked up individually or in several rows, and then gently lowered and the fork can be pulled out. This is extremely effective, especially when a large number of short pipes are stored side by side, such as couplings for oil country tubular goods.

As a result of this invention, for example, the average throughput for plating the inner surface of couplings for oil country tubular goods has been dramatically increased to about five times that using conventional equipment.

Since the actual soaking time remains the same, you can see how the time other than soaking has been reduced and streamlined.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main part of one embodiment of this invention, Fig. 2 is an explanatory cross-sectional view thereof, Fig. 3 is a partial explanatory view of the front side, and Fig. 4 is a partial explanatory view of the front side.
The figure is a cross-sectional explanatory diagram including the hanging cage supply and take-out device, Nos. 5 and 6.
The figures are front and side views of the hanging cage and the anode support part, FIG. 7 is a conceptual plan view of the hanger, and FIG. 8 is a front view of the hanging cage return mechanism. 1...hanging basket, 2...hanger, 3...
... Elevating frame, 9 ... Conductive plate for positive and negative power supply, 15
... Anode rod, 16 ... Anode support part, 1
7... Hanging cage supply device, 18... Hanging cage take-out device, 19... Anode anti-support material, 20... Hanging cage raising/lowering, transfer receiving frame, 26... ...Product removal stand, 28
... Hanging basket return mechanism, 29 ... Product insertion table.

Claims (1)

[Scope of Claims] 1. Horizontal circulation equipment for the lift frame of the hanger, positive and negative power supply equipment for the hanger installed along the circulation path of the lift frame, an anode rod hanging from a support part mounted on the positive power supply part of the hanger, A product hanging basket hung from the negative power supply part of the hanger, a hanging basket supply device that suspends the hanging basket containing the product to be plated from the hanger, and a hanging basket that removes the hanging basket containing the plated product from the hanger. A temporary anode support member for preventing the anode rod support portion on the lifter located above the take-out device and the hanging cage supply and take-out device and located at the top of the lift frame from descending. Automatic circulation plating equipment. 2. Horizontal circulation equipment for the hanger lifting frame, positive and negative power supply equipment, anode rods hanging from the support part on the hanger, product hanging baskets hung on the hangers, hanging basket supply to the circulation equipment, take-out device, and the above hangings. An anode temporary support material that prevents the anode rod support portion on the hanger located at the top of the elevator frame above each of the cage supply and take-out devices from falling; and a suspension cage attached to each of the above-mentioned hanging cage supply and take-out devices A fully automatic circulation system characterized by being equipped with a tilting and transferring mechanism, a product take-out and insertion facility for intermittent horizontal movement of a hanging basket lying on its side, and a hanging basket return mechanism for transporting empty hanging baskets from the product take-out facility to the product insertion facility. Plating equipment.