JPH06335652A - Automatic coating device - Google Patents

Abstract

PURPOSE:To provide an automatic coating device automatically and efficiently forming a metallic coating film on a peripheral surface of a small molding such as ceramics. CONSTITUTION:This device is composed of an inner basket 2 with a vertical cylindrical form in which a side surface and bottom surface housing the small molding are formed with a perforated plate (or a metal net), a belt conveyor 20, a weighing device 22, a feeder 10 with a hopper, a transfer means 30 for inner basket enabling freely to lift the inner basket 2, to move traversely, to vibrate slightly up and down and to rotationally oscillate, a coating tank 40 housing and immersing the inner basket 2 and an agitation tank 50 communicating with the coating tank 40, a rotary table 60 enabling to inclinedly rotate, a jet device 70 of high temp. air of normal temp., high pressure air, and a belt conveyer 80 for discharge.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic coating apparatus for forming a metal coating film on the outer peripheral surface of a small compact such as ceramics.

[0002]

2. Description of the Related Art Conventionally, in order to form a metal coating film on the surface of a small compact formed by firing a powder of an inorganic oxide such as ceramics in a mold and then firing it in an electric furnace, a brush is used for each small compact. Either by painting or by dipping the container containing the small compact into a solution tank filled with metal solution by hand.
There was a street way.

[0003]

However, brush painting is extremely inefficient, which increases the production cost and is unprofitable, and the dipping method manually wastes a lot of time for draining and drying after dipping. As a result, productivity is poor and harmful gas is generated during drying, which adversely affects the occupational safety and health of workers. Therefore, it has been desired to develop an efficient device that automates these operations.

[0004]

In order to solve the above-mentioned problems, the present invention is an automatic coating apparatus for forming a metal coating film on the outer peripheral surface of a small compact, which is an upright cylindrical shape having side and bottom surfaces. Is an inner basket formed of a perforated plate or a wire mesh, a belt conveyor for transferring the inner basket, a scale for weighing a load on the belt conveyor, and a small molded body in the inner basket loaded on the belt conveyor. A feeder having a hopper for feeding the inner basket, and an inner basket transporting means for gripping the inner basket to move up and down, move laterally, and lower and to freely swing and swing the high frequency small amplitude, and the inner basket. A horizontal bottom plate that can be fitted and has a side wall made of a perforated plate or a wire mesh and is fixed upright in the form of an upright cylindrical outer basket that is rotatable around a vertical axis and a cylindrical shape that can be raised and lowered around the outer basket. The coating tank, the coating tank, and the bottom surface of the coating tank are flexible tubes. To the inner basket, which is slidable and is vertically movable, and which is provided with a stirring tank for a metal solution having a stirrer, and the inner basket is placed and tilted, and which is rotatable and the rotatable table is tilted. The drying unit is composed of an air injection device that blows high-temperature air or normal-temperature high-pressure air toward it, and a discharging belt conveyor that transfers the inner basket containing the dried small compact.

[0005]

In the present invention, a prescribed number of small compacts are put in the inner basket, and the inner basket is transferred to the outer basket in the coating tank and stored therein through the inner basket transfer means. After that, the stirring tank is raised to introduce the metal solution into the coating tank, and the small compact in the inner basket is immersed in the metal solution. After a certain period of time, only the inner basket is gripped and lifted by the inner basket transfer means, and high-frequency vibrations such as vertical and rotational oscillations are applied to form a coating film uniformly on all the small compacts. Next, the stirring tank is lowered to transfer the metal solution in the coating tank to the stirring tank, and the coating tank is slightly lowered, and then the bottom plate is rotated at high speed to drain the solution in the inner basket.
After that, the inner basket is taken out from the outer basket and placed on the rotary table, and when the rotary table and the inner basket are tilted and the rotary table is rotated, the small compact in the inner basket rolls inside and the coating film is formed. It becomes uniform and drainage is promoted. At this time, high-temperature air or normal-temperature high-pressure air is blown from the side of the inner basket to accelerate the drying. After the drying is completed, the inner basket is transferred to a belt conveyor for discharge and is sent to the next process by the belt conveyor.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 relate to an embodiment of the present invention,
FIG. 1 is an overall schematic flow sheet, FIG. 2 is a plan view of a main part of an inner basket transfer means, and FIG. 3 is a work process diagram.

As shown in FIG. 1, an automatic coating apparatus 1 is composed of a feeding section, a coating section, a drying section and a discharging section, and is an inner basket having an upright cylindrical shape whose side and bottom surfaces are formed of perforated plates or wire mesh. The small compact put in 2 is dipped in a coating tank 40 containing a metal solution to form a metal coating film on the surface, 10 is a feeder with a hopper, 20 is a belt conveyor for supplying an inner basket, and 30 is Inner basket transfer means, 40 is a coating tank, 50 is a stirring tank, 60 is a rotary table, 70 is an air injection device, and 80 is a belt conveyor for discharging the inner basket.
The belt conveyor 20 is equipped with a weighing machine (beltware) 22, and in cooperation with the feeder 10 with a hopper, a specified number of small moldings are made in the inner basket 2 from the difference between the empty inner basket 2 and the total weight of the small moldings. Manage to put in the body. Inner basket transfer means 30
Is the oscillator 34 that holds the chuck 32 that holds the upper end of the inner basket 2.
And two horizontal rails 38b near the ceiling.
It is connected to a piston rod 36a of an air cylinder 36 that hangs from a dolly 38 having wheels 38a traveling above, and operations A, B, C,
D and B1 can be moved up and down and operation X can be moved laterally, and the oscillator 34 is energized to cause a small vertical vibration (operation B2).
And a reciprocating rotation (operation B3). Lateral movement of the inner basket transfer means 30 (operation X)
Instead of running the truck 38 on the rail, a magnet type rodless cylinder may be used. Further, the oscillator 34 can be caused to perform only a vertical vibration (operation B2), and a rotary actuator can be used for rotational oscillation (operation B3). The mechanism of the chuck 32 that holds the inner basket 2 is
As shown in FIG. 2, the chucks 32, 32 are opened and closed by reciprocating left and right in the axial direction of the guide rod 32a by the operation of the pair of left and right air cylinders 32b.
Hold or remove the upper end frame of the inner basket 2. The coating tank 40 has a structure in which a through hole is provided at the center of the bottom surface of a cylindrical shape, and a short tube is erected at the upper end of the through hole, and a rotary shaft 46a that is driven to rotate by a motor 46 vertically penetrates the through hole. The horizontal bottom plate 44a and the outer basket 44 are fixedly mounted on the upper end of the rotary shaft 46a. The outer basket 44 has a cylindrical surface with a perforated plate and has a diameter capable of accommodating the inner basket 2 therein, and has a height lower than that of the inner basket 2. An elastic rubber for sealing is provided around the upper end of the short pipe on the through hole so that the internal solution does not leak when the lower surface of the bottom plate 44a comes into contact with the upper end of the short pipe. The coating tank 40 is configured so that it can be moved up and down by a minute height (operation P), and the stirring tank 50 is vertically moved (moved up and down) (operation Q) in the immediate vicinity of the coating tank 40, and the bottom surfaces are in flexible communication. Connected by pipe. The stirring tank 50 is equipped with a stirrer 50a. The role of the stirring tank 50 is the coating tank 4
It moves up and down to supply and discharge the metal solution to the inside of 0. Instead of moving the stirring tank 50 up and down, when the solution is supplied into the coating tank 40 by sealing the stirring tank 50, the stirring tank 50 is moved to the stirring tank 50. By supplying compressed air and degassing the air in the stirring tank 50 with a vacuum pump to discharge the solution in the coating tank 40, the stirring tank 50 can be fixed equipment (no need to move up and down).

The rotary table 60 includes an air cylinder 64a.
A horizontal disk is provided at the upper end of a vertical shaft that can be rotated by a motor 62 on a pedestal 64 that can be tilted about a pin joint 64b. As shown in FIG. The upper frame of the basket 2 is a roller 66.
The small molded body inside the inner basket 2 repeats rolling interaction in the inner basket to promote dispersal and drying. The air injection device 70 injects high temperature air into the inner basket to promote drying.

The operation of the automatic coating apparatus 1 of the present invention constructed as above will be described. FIG. 3 is a work process diagram showing an embodiment of the present invention. The inner basket 2 placed on the belt conveyor 20 is first weighed with an empty load by the belt wear 22 and then weighted with a specified number. The small molded body is loaded by the feeder 10 with the hopper until the measured value corresponding to is reached. The inner basket 2 filled with the specified number of small compacts advances by the belt conveyor 20 and is stored in the outer basket 44 in the coating tank 40 by the inner basket transfer means 30. After that, the stirring tank 50 rises, the metal solution enters the coating tank 40, and a metal coating film is formed by immersing the small compact in the inner basket. In order to spread the solution over the entire peripheral surface of the small compact, the inner basket 2 is slightly lifted in the outer basket 44, and the oscillator 34 is energized to generate high-frequency vertical vibration (operation B).
2) and rotation swing (motion B3) are given to the inner basket 2.
Next, in order to discharge the metal solution in the coating tank 40, the stirring tank 5
0 is lowered (operation Q), the inner basket 2 is placed on the bottom plate 44a, and then the coating tank 40 is slightly lowered (operation P), the motor 4
6 is energized to drain the inner basket 2 and the small compact.
After the drainage is completed, the inner basket 2 is placed on the rotary table 60 by the inner basket transfer means 30 and then the rotary table 60
Is tilted (operation R) to drive the motor 62 and blow hot air. In this way, after the drying process is completed, the inner basket 2 is transferred onto the discharging belt conveyor 80, and the belt conveyor 80 transfers the inner basket 2. A, B, C, D, B1, B2, B3, X, in FIGS.
P, Q, and R indicate the operations of raising and lowering, laterally moving, rotating and swinging, and tilting each device.

The above-described process is the flow of the automatic coating work accompanying the movement of one inner basket. In order to efficiently process a large number of inner baskets, for example, the operation A shown in FIG.
The work efficiency can be improved by simultaneously performing B, C, and D in the four inner baskets. For that purpose, the positions for performing the operations A, B, C, and D are arranged on the same straight line on a plane, the distances between the adjacent positions are set to an equal pitch, and the inner basket transfer means 30 is a four-row simultaneous facility. You can also Further, if these series of steps are carried out in an isolated dust hood, it is possible to prevent the human body from being adversely affected and the factory from being contaminated.

[0011]

As described above, the automatic coating apparatus of the present invention can automatically, efficiently perform the supply, transfer, dipping, dispersal, drying, and discharging of the small compacts without requiring any manpower. ， Can prevent occupational accidents caused by gas that is harmful to the human body.

[Brief description of drawings]

FIG. 1 is an overall schematic flow sheet of an automatic coating device according to an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the inner basket transfer means of the automatic coating apparatus according to the embodiment of the present invention.

FIG. 3 is a work process diagram of the automatic coating apparatus according to the embodiment of the present invention.

[Explanation of Codes] 1 Automatic coating device 2 Inner basket 10 Feeder with hopper 20 Belt conveyor 22 Belt wear 30 Inner basket transfer means 32 Chuck 32a Guide rod 32b Air cylinder 34 Oscillator 36 Air cylinder 36a Piston rod 38 Bogie 38a Wheel 38b Rail 40 Coating tank 42 Communication pipe 44 Outer basket 44a Bottom plate 46 Motor 46a Rotating shaft 50 Stirring tank 50a Stirrer 60 Rotating table 62 Motor 64 Frame 64a Air cylinder 64b Pin joint 70 Air injection device 80 Belt conveyor

Claims (1)

[Claims] 1. An automatic coating apparatus for forming a metal coating film on the outer peripheral surface of a small compact, which is an upright cylindrical shape and whose inner and side surfaces and bottom surfaces are formed of perforated plates or wire mesh, and transfers the inner basket. A belt conveyor, a weighing machine for weighing a load on the belt conveyor, a feeder with a hopper for feeding a small compact into the inner basket loaded on the belt conveyor, and a gripper for the inner basket to move up and move laterally. , An upright cylindrical shape in which the feeding part is composed of an inner basket transfer means that descends and is capable of swinging and swinging up and down with high frequency and small amplitude, and the inner basket can be fitted and the side surface is formed of a perforated plate or a wire mesh. A horizontal bottom plate that has an outer basket fixed to it and is rotatable around a vertical axis, a cylindrical coating tank that is installed around the outside of the outer basket and that can move up and down, and the coating tank and the bottom surface are connected by a flexible tube. And a stirring tank for metal solutions that can be moved up and down and equipped with a stirrer And a tilting table with the inner basket mounted thereon and a tilting table, and a drying unit comprising a rotatable table and an air jet device for blowing high-temperature air or room-temperature high-pressure air toward the tilted inner basket. And an automatic coating device comprising a belt conveyor for discharging the inner basket containing the dried compacts.