JPH04362165A - Method for automatic hot-dip coating on work and hot-dip coating apparatus - Google Patents

Abstract

PURPOSE:To automatize a series of operations in hot-dip coating, to remarkably improve the operating efficiently and to apply plating of good quality to works. CONSTITUTION:Many works 2... are charged to basket bodies 3, and after that, the above basket bodies 3 are fed to a plating bath 7 by a carrier 5, and plating is applied to the works 2.... Furthermore, the above basket bodies 3 are fed to a vibrator 8 by the above carrier 5, and after that, vibration is applied to the basket bodies 3 by the above vibrator 8 to remove undersired plating liq. or the like stuck to the works 2....

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to an automatic hot-dip plating method and hot-dip plating apparatus for workpieces, and more particularly, to an automatic hot-dip plating method and hot-dip plating apparatus that can efficiently apply good plating to a large number of workpieces. .

0002

2. Description of the Related Art Conventionally, this type of plating work has been carried out, for example, as follows.

That is, in this conventional method, first, a large number of workpieces that have been subjected to pretreatment such as descaling and degreasing are placed in a basket body, and after being immersed in a plating tank to perform hot-dip plating, the workpieces are removed from the basket body. This removes the plating solution from the plating bath and removes unnecessary plating liquid that has adhered to the workpiece.

0004

[Problems to be Solved by the Invention] However, since the series of conventional plating operations described above are mainly performed manually, it is necessary to secure a certain number of workers, and the burden placed on each worker is enormous. There was a fatal problem in that it was difficult to use, and the work efficiency was extremely poor.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and it automates a series of hot-dip plating operations, greatly improves the efficiency of the process, and provides workpieces with good quality. The goal is to be able to apply plating that is

[0006]

[Means for Solving the Problems] That is, in order to solve the above problems, the present invention provides a method in which a large number of de-rusted works 2 are loaded into a basket body 3, and then the basket body 3 is plated by a conveyor 5. The workpieces 2 are supplied to a tank 7 to be plated, and the cage body 3 is further supplied to a vibrator 8 by the conveyor 5, and then the cage body 3 is vibrated by the vibrator 8, and the workpieces 2... This is an automatic hot-dip plating method for workpieces that removes unnecessary plating liquid, etc. that has adhered to the workpiece.

[0007] Furthermore, the removal of plating liquid etc. adhering to the works 2 after plating may be performed using a centrifugal separator 10 instead of or together with the vibrator 8.

Furthermore, the hot-dip plating apparatus according to the present invention includes:
A plating tank 7 in which a basket body 3 into which a large number of works 2 are placed is immersed to plate the works 2; and the basket body 3.
a vibrator 8 for applying vibration to remove unnecessary plating liquid etc. adhering to the works 2 in the cage body 3; and a vibrator 8 for supplying and discharging the cage body 3 to the vibrator 8 and the plating tank 7. It consists of a conveyor 5.

[0009]

[Operation] Therefore, in the automatic hot-dip plating method for works characterized by the above-mentioned structure, the basket body 3 into which a large number of works 2 are loaded is first supplied to the plating tank 7 by the conveyor 5, and the plating solution is After this hot-dip plating, the cage body 3 is again taken out from the plating bath 7 by the conveyor 5 and supplied to the vibrator 8. After that, when the vibrator 8 is activated, the cage body 3 is vibrated, and the workpiece 2 is
Unnecessary plating liquid etc. adhering to ... will be removed satisfactorily.

[0010] Thus, such a series of hot-dip plating operations can be performed automatically, extremely easily and quickly. In addition, since the vibrator 8 can remove unnecessary plating liquid and the like adhering to the workpieces 2, it is possible to obtain the workpieces 2 with good plating conditions.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, a hot-dip plating apparatus 1 as an embodiment
As shown in FIG. 1, there is a work supply table 4 on which a basket body 3 into which a large number of works 2 can be placed, a conveyor 5 for conveying the basket body 3, and a molten plating solution 6 are stored. a plating tank 7, a vibrator 8 and a centrifugal separator 10 for removing unnecessary plating solution adhering to the work pieces 2 after hot-dip plating.
, a reversing machine 9 for reversing the cage body 3 and feeding the work 2 into another basket body 11 installed in advance in the centrifugal separator 10; It consists of a transfer machine 14 and a discharge reversing machine 16 for reversing the basket body 11 transferred by the transfer machine 14 and discharging the works 2 to the discharge conveyor 15, and is implemented with this main configuration. A hot-dip plating apparatus 1 is formed as an example, and detailed structural requirements thereof will be explained below.

In FIG. 1, reference numeral 3 denotes a cage body made of a net-like body with an open top surface as shown in FIG. 17 are provided. Reference numeral 4 denotes a work supply table on which a plurality of cage bodies 3 can be placed.

Reference numeral 5 denotes a conveyor for conveying the basket body 3. The conveyor 5 is movable on the conveyor table 18 in the direction of arrow A, and has an arm 20 that moves up and down and rotates about a support shaft 19. As shown in FIG. 3, the air cylinder 22 has a hanging member 21 attached to the tip of the arm 20, which can be suspended from the holding punches 17, 17 of the cage body 3, and the cage body 3. Air cylinders 24 and 24 each having a lid 23 attached thereto are provided to cover the upper opening of the air cylinder.

Reference numeral 7 denotes a plating tank arranged in parallel at a predetermined distance from the transport table 18, and a plating solution 6 is stored in the plating tank 7. Reference numeral 8 denotes a vibrator placed on the side of the plating tank 7, and by operating the motor 25 as shown in FIG. The mounting plate 27 and the vibrator main body 28 are connected by a plurality of springs 29.

9 is a diagram showing a state in which the basket body 3 conveyed from the vibrator 8 by the conveyor 5 is reversed, and the works 2 in the basket body 3 are set in advance in a centrifugal separator 10 for later processing.
This is a reversing machine for feeding another basket body 11 made of a net-like body with an opening on the top surface as shown in FIG.
A table 33 is configured to be able to reciprocate in the direction of the arrow by an air cylinder 32 along a pair of rails 31, 31 laid on the upper surface, and a hole 33a is provided in the approximate center of the table 33.
is drilled. A pair of chucks 34 are provided on both sides of the hole 33a, and are configured to be able to hold the holding rods 17, 17 of the cage body 3 between the claw bodies 36, 36 by air cylinders 35, 35. a rack 39 provided on the rod 38 of the air cylinder 37 for reversing the
A shaft 40 connected to the claw body 36 of one chuck 34 is meshed with a gear 41 fitted on the outside.

Reference numeral 10 denotes a centrifugal separator in which a frame body 42 to which a cage body 11 can be mounted is rotated by a motor 43 as shown in FIG. Bent blades 44 are provided radially,
The centrifugal separator 10 is configured so that unnecessary plating liquid and the like removed from the works 2 by the rotation of the frame 42 can be efficiently discharged from the discharge ports 45, 45 formed on the sides of the centrifugal separator 10. 46 is a lid that can close the top opening of the centrifuge 10, and the lid 46 is connected to the rail 60 by an air cylinder 59.
It is configured to slide along the

Reference numeral 14 denotes a transfer device for taking out the cage body 11 from the centrifugal separator 10 and transferring it to the flux tank 13 and the discharge reversing machine 16, and is rotatable around a support shaft 47 and can be raised and lowered. As shown in FIG. It is configured so that it can be hung while being locked to the upper end.

The discharge reversing machine 16 is configured to be able to reverse the basket body 11 and discharge the works 2 onto the discharge conveyor 15.

Reference numeral 51 denotes a furnace surface brushing device disposed above the plating tank 7, and a plate-shaped device is installed at the lower end as shown in FIG. 9 in order to remove flux such as oxides floating in the plating solution 6 in the plating tank 7. A movable rod 53 equipped with a brush 52 is moved up and down along guides 55, 55 by an air cylinder 54, and attached to a chain 57 driven by an electric motor 56 to a brushing device main body 58.
is fixed and configured to reciprocate in the direction of the arrow.

The present embodiment has the above-described configuration, and the case where hot-dip plating is applied to a work using this will be explained.

First, the basket body 3 is placed at a predetermined position on the work supply table 4, and a large number of works 2 to be plated, such as gutter holder fittings, etc., are placed therein. The work 2 has already been subjected to pretreatment such as derusting.

Next, the conveyor 5 is operated to move the arm 2 as appropriate.
As shown in FIG. When the cage body 3 moves above the plating tank 7, the arm 20 is lowered to immerse the cage body 3 in the plating solution 6 in the plating tank 7.

Then, the brush 52 of the furnace surface brushing device 51 is moved while immersed in the plating solution 6 to scrape and remove flux such as oxides floating in the plating solution 6, and then the arm 20 is raised. While moving, move the conveyor 5 again in the direction of arrow A.
direction, and place the cage body 3 on the mounting plate 27 of the vibrator 8 as shown in FIG.
21 and the holding rods 17, 17 of the cage body 3 is released, and when the motor 25 of the vibrator 8 is activated, the mounting plate 27 moves up and down via the link mechanism 26, and the mounting plate 27 is moved up and down to the cage body 3. Vibration will be applied. As a result, vibrations are applied to the works 2 in the cage body 3, and unnecessary plating liquid and the like adhering to the works 2 are removed. The brush 52 of the furnace surface brushing device 51 is raised by the air cylinder 54 and returns to its original position.

Next, the cage body 3 is again suspended and held by the conveyor 5 and fed to the reversing machine 9, but the arm 20 is lowered and the holding rods 17, 17 of the cage body 3 are moved to the chuck 34, 34, the air cylinders 35, 35 are activated to chuck the holding rods 17, 17 with the claws 36, 36. Thereafter, the arm 20 of the transfer machine 5 is lowered, and the transfer machine 5 returns to its original position to transfer the next cage body 3 to the plating tank 7, while the table 33 of the reversing machine 9 operates the air cylinder 32 The table 33 is moved to the centrifugal separator 10 side, and the table 33 is stopped when the cage body 3 is on the cage body 11 of the centrifuge 10. Then, the air cylinder 37 is operated and the rack 39 and the gear 4 are moved to the centrifuge 10 side.
The claw bodies 36, 36 rotate through the centrifugal separator 1, etc., thereby inverting the basket body 3, and the works 3 are thrown into the basket body 11 in the centrifugal separator 10. Thereafter, the reversing machine 9 is returned to the vibrator 8 side by the air cylinder 32.

When the motor 43 is operated after the lid 46 of the centrifuge 10 is closed, the cage 11 rotates together with the frame 42, removing unnecessary works 2 that could not be removed by the vibrator 8. The plating solution is removed. This makes it possible to obtain the workpiece 2 with a good plating finish.

In this case, since the lower surface of the frame body 42 is provided with blades 44 , the plating liquid and the like removed by the blades 44 are removed from the discharge port 45 provided below the centrifuge 10 . , 45. Therefore, good operation can be ensured without the inconvenience that the plated metal obtained by hardening the plating liquid accumulates in the centrifugal separator 10 and impedes the rotation of the frame 42.

Next, after opening the lid 46 of the centrifugal separator 10, the arm 48 of the transfer device 14 is rotated and lowered toward the centrifuge 10, and when the air cylinders 49 are operated, the locking member is released. 50 rotates and locks onto the upper frame portion of the basket body 11. In this state, the arm 48 is raised and rotated toward the flux tank 13 to perform flux treatment, and then further rotated to supply the basket body 11 to the discharge reversing machine 16 and reverse it. 2...
is discharged onto the belt of the discharge conveyor 15.

[0029] Then, by repeating the same operation, work 2
The hot-dip plating work is carried out, but since this series of work can be done automatically, it is possible to reduce the number of workers and reduce the burden on the workers, thereby greatly improving the work efficiency. This became possible.

In the above embodiment, both the vibrator 8 and the centrifugal separator 10 are configured to remove unnecessary plating liquid etc. adhering to the workpiece 2 after plating.
It is not necessarily necessary to provide both. In addition, in the case where both of these are provided, the plating solution etc. may first be removed by the centrifuge 10, and then the plating solution etc. may be further removed by the vibrator 8. The order does not matter.

Further, the discharging reversing machine 16 and the discharging conveyor 15 are not essential conditions of the present invention, and may be provided as necessary.

In addition, the configurations of the cage bodies 3, 11, the conveyor 5, the reversing machine 9, the furnace surface brushing device 51, etc. can all be freely changed in design within the scope of the present invention.

[0033]

[Effects of the Invention] As mentioned above, the present invention uses a conveyor or the like to transport the plating process, which significantly reduces the burden on the operator compared to the conventional method of performing the plating process by hand. This has resulted in the exceptional effect of being able to reduce the number of workers, as well as reducing the number of workers.

[0034] Furthermore, since the structure is configured to remove unnecessary plating liquid etc. adhering to the workpiece after plating using a vibrator and a centrifugal separator, it is possible to obtain a workpiece that has been satisfactorily hot-dip plated. It will also have a unique effect.

Furthermore, since the hot-dip plating apparatus according to the present invention has an extremely simple configuration, it has the practical effect of being able to be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a hot-dip plating apparatus according to the present invention.

[Fig. 2] (A) is a front view of the basket body, and (B) is a side view of the same.

FIG. 3 (a) is a front view showing a state in which the basket body is suspended by a carrier, and (b) is a side view of the same.

FIG. 4 is a front view showing a state in which vibration is applied to the cage body by a vibrator.

FIG. 5 (a) is a plan view of the basket body, and (b) is a front view of the same.

FIG. 6 is a plan view showing the reversing machine.

FIG. 7 is a partially sectional front view showing a centrifuge and a cage body.

[Fig. 8] (A) is a front view of the transfer machine, and (B) is a plan view thereof.

FIG. 9A is a front view of the furnace surface brushing device, and FIG. 9B is a side view of the same.

[Explanation of symbols]

2...Work
3...Cage body 5...Transport machine
7... Plating tank 8... Vibrator
9... Inverter 10... Centrifugal separator
11...Cage body 14...Transfer machine 51...Furnace surface brushing device 52...Brush

Claims (6)

[Claims] 1. After putting a large number of works 2 into a basket body 3, the basket body 3 is supplied to a plating tank 7 by a conveyor 5, and the works 2 are plated. A method for automatic hot-dip plating of workpieces, characterized in that after the cage body 3 is supplied to a vibrator 8, vibration is applied to the cage body 3 by the vibrator 8 to remove unnecessary plating liquid etc. adhering to the workpieces 2. . 2. After putting a large number of works 2 into a basket body 3, the basket body 3 is supplied to a plating tank 7 by a conveyor 5, and the works 2 are plated, and further by the conveyor 5. The cage body 3 is fed to the reversing machine 9, and then the reversing machine 9
After inverting the cage body 3 and putting the workpieces 2 into the cage body 11 attached to the centrifuge 10, the centrifuge 10 is operated to remove unnecessary plating liquid etc. adhering to the workpieces 2. An automatic hot-dip plating method for a workpiece, characterized by removing the workpiece and plating the workpiece 2. 3. After putting a large number of works 2 into a basket body 3, the basket body 3 is supplied to a plating tank 7 by a conveyor 5, and the works 2 are plated. The cage body 3 is supplied to the vibrator 8 to give vibration to the cage body 3, and then the cage body 3 is supplied to the reversing machine 9 by the conveyor 5, and the works 2 are transferred to the reversing machine 9. After inverting the basket body 3 and putting the work pieces 2 into the basket body 11 attached to the centrifuge 10, the centrifuge 10 is operated to remove unnecessary plating liquid etc. attached to the work pieces 2. The automatic hot-dip plating method for works is characterized in that the cage body 11 is removed from the centrifuge 10 by a transfer device 14 and the works 2 are plated. 4. A plating tank 7 for plating a basket body 3 into which a large number of works 2 have been placed, and a plating bath 7 for plating the works 2 by immersing the basket body 3 into which a large number of works 2 have been input, and a plating bath 7 for plating the works 2 by applying vibration to the basket body 3. 2, a vibrator 8 for removing unnecessary plating liquid etc. adhering to the plating tank 2, and a conveyor 5 for supplying and discharging the cage body 3 to and from the vibrator 8 and the plating tank 7. Hot-dip plating equipment. 5. A centrifugal separator 10 is used in place of the vibrator 8.
5. The hot-dip plating apparatus according to claim 4, further comprising:. 6. A plating tank 7 in which a basket body 3 into which a large number of works 2 are placed is immersed to plate the works 2, and a plating liquid 6 to remove impurities floating in the plating tank 7. a furnace surface brushing device 51 equipped with a brush 52 that moves by scraping the liquid surface; and a vibration device that vibrates the cage body 3 in order to remove unnecessary plating liquid etc. attached to the works 2 in the cage body 3. A centrifugal separator 10 for rotating the machine 8 and other cage bodies 11, a transport machine 5 for transporting the cage body 3, and a workpiece 2... mounted on the centrifuge 10 by inverting the cage body 3. A hot-dip plating apparatus characterized by comprising a reversing machine 9 for supplying to a cage body 11.