KR102586321B1 - The device and method for coating a Machine Part - Google Patents

Abstract

A coating device for mechanical parts is disclosed. The coating device includes a coating liquid tank that accommodates the coating liquid, a sealing cover that surrounds a cover area provided on the side of the uncoated portion from the boundary between the coated portion and the uncoated portion of the mechanical part, and is provided on the coating liquid tank, and coats the mechanical part. The component mounting portion for supporting the mechanical part so as to protrude toward the coating liquid tank and the coating portion of the mechanical component are immersed in the coating liquid of the coating liquid tank. It includes a driving unit that operates the component mounting unit to separate it from.

Description

{The device and method for coating a Machine Part}

The present invention relates to an apparatus and method for coating only specific parts of mechanical parts.

A ball stud, one of the machine parts, is a bolt with a ball-shaped head. The ball stud may serve to maintain or transmit force in a free direction while the ball-shaped head is accommodated and supported in the ball housing. Bolt studs can be mainly used as parts for chassis steering and for connecting the chassis and body.

The ball housing that holds the sphere of the ball stud and the head (ball) of the ball stud move freely while rubbing. The friction contact surface is assembled in its processed state without surface treatment, and the lubricated exterior is sealed with a rubber jacket called a boot. Except for the part of the bolt stud that is surrounded by the boot, the remaining bolt parts are mainly threaded and exposed to the outside for fastening to other parts. Therefore, the bolt portion requires anti-rust coating treatment.

The rust prevention coating of the prior art is performed by immersing the entire ball stud in a coating solution while covering the rest except the bolt portion with a cover consisting of a sleeve and a cap. However, this conventional method has the following problems.

First, in order to coat a large number of mechanical parts with anti-rust coating, sleeves and caps must be placed and separated one by one, which can increase manufacturing costs due to the consumption of a lot of manpower and time.

Second, during anti-rust coating, because the entire machine part is immersed in the coating solution, the used sleeve and cap may be covered in the coating solution, making recycling difficult, increasing manufacturing costs.

Third, because sleeves and caps that fit various types of mechanical parts are required, manufacturing costs may increase due to the high manufacturing cost of the cover.

Fourth, because the coating liquid sticks to the sleeve and cap, manufacturing costs may increase as the consumption of the coating liquid increases.

[Prior art literature]

Korean Patent Publication No. 10-1637500

The purpose of the present invention is to solve the above-mentioned problems and provide a coating device and method for mechanical parts that can reduce manufacturing costs.

A coating device for mechanical parts is provided to achieve the above-described tasks. A coating device for mechanical parts includes a coating liquid tank containing a coating liquid, a sealing cover surrounding a cover area provided on the side of the uncoated part from the boundary between the coated part and the uncoated part of the mechanical part, and A component mounting portion is provided on the coating liquid tank and supports the mechanical component so that the coating portion of the mechanical component protrudes toward the coating liquid tank, and the component mounting portion is directed toward the coating liquid tank so that the coating portion of the mechanical component is immersed in the coating liquid of the coating liquid tank. It includes a driving unit that operates the component mounting unit to approach and separate the coating portion of the mechanical component from the coating liquid.

The coating device may further include a stopper provided in the coating liquid tank to limit the amount of approach movement of the component mounting portion.

The coating device may further include an insert carrier provided with a slit into which the at least one mechanical part is inserted and mounted on the part mounting unit.

The coating device may further include a water level sensor that detects the level of the coating liquid in the coating liquid tank, and a processor that controls the amount of approach movement of the component mounting unit with reference to the level of the coating liquid detected by the water level sensor.

The coating device may further include a water level sensor that detects the level of the coating liquid in the coating liquid tank, and a processor that adjusts the height of the stopper with reference to the level of the coating liquid detected by the water level sensor.

The coating device includes a coating liquid supply unit that supplies the coating liquid to the coating liquid tank, a water level sensor that detects the level of the coating liquid in the coating liquid tank, and a supply of the coating liquid to fill the coating liquid tank with reference to the level of the coating liquid detected by the water level sensor. It may further include a processor that controls the unit.

A coating method for mechanical parts to achieve the above-described tasks is provided. The method of coating mechanical parts includes filling a coating liquid tank with a coating liquid at a predetermined level, enclosing a cover area on the side of the uncoated part from the boundary between the coated part and the uncoated part of the mechanical part with a sealing cover, and coating the mechanical part. Placing a component mounting portion on which the mechanical component is supported so as to protrude toward the coating liquid tank on the coating liquid tank and approaching the component mounting portion toward the coating liquid tank to immerse the coating portion of the mechanical component in the coating liquid of the coating liquid tank , separating the coating part of the mechanical part from the coating liquid, and drying the mechanical part.

The coating method for mechanical parts according to an embodiment of the present invention reduces the manpower and time required for masking and reduces the waste of coating liquid by immersing only the coated part of the mechanical part in the coating solution and masking only the minimum portion of the boundary between the coated part and the uncoated part. It is possible to reduce manufacturing costs by reducing the size of the sealing cover to a minimum.

Figure 1 is a perspective view of a coating device for mechanical parts according to an embodiment of the present invention.
Figure 2 is a diagram showing the separated state of the ball stud and the sealing cover.
Figure 3 is a diagram showing the combined state of the ball stud and the sealing cover.
Figure 4 is a diagram showing an insert carrier on which a ball stud coupled with a sealing cover is mounted.
Figure 5 is a block diagram of a ball stud coating device according to an embodiment of the present invention.
Figure 6 is a flowchart showing a method of coating a ball stud according to an embodiment of the present invention.
Figure 7 is a diagram showing a state before operation of the ball stud coating device according to an embodiment of the present invention.
Figure 8 is a diagram showing the state after operation of the ball stud coating device according to an embodiment of the present invention.

Hereinafter, the coating device 1 for mechanical parts according to embodiments of the present invention will be described in detail with reference to the attached drawings. Hereinafter, the mechanical part will be described using 'bolt stud (2)' as an example, which is not limited.

Figure 1 is a perspective view of a coating device 1 for a ball stud 2 according to an embodiment of the present invention.

Referring to FIG. 1, the coating device 1 includes a coating liquid tank 10 that accommodates the coating liquid, and is provided on the coating liquid tank 10, and the coating portion 2a of the ball stud 2 is directed toward the coating liquid tank 10. The component mounting portion 20, which supports the ball stud 2 so as to protrude, is approached toward the coating liquid tank 10 so that the ball stud 2 is immersed in the coating liquid of the coating liquid tank 10, and the ball stud 2 is immersed in the coating liquid of the coating liquid tank 10. It includes a driving unit 30 that operates the component mounting unit 20 to separate the stud 2 from the coating liquid.

The coating liquid tank 10 may include a container 11 filled with the coating liquid, and a stopper 12 protruding from the center of the container 11.

The container 11 has a cylindrical shape and can be filled with, for example, a rust-prevention coating liquid at a predetermined water level. The container 11 may have various shapes other than a cylindrical shape. The anti-rust coating solution may be a water-soluble or organic solvent-based paint composed of zinc powder, aluminum powder, metal oxide, and organic materials, for example, product names MAGNI, DELTA, GEOPERT, and GEOMET. A water level sensor (80 in FIG. 5) capable of detecting the water level of the coating liquid may be disposed in the container 11.

The stopper 12 is provided on the upper side to limit the movement of the approaching component mounting portion 20 and can prevent the ball stud 2 mounted on the component mounting portion 20 from being submerged beyond a certain portion. The stopper 12 can be adjusted to go up and down in conjunction with the coating liquid level in the coating liquid tank 10.

The component mounting portion 20 may include a disk-shaped base 22 provided with at least one slot 21.

An insert carrier 50 on which at least one ball stud 2 is mounted can be seated in the slot 21.

The base 22 may include a drive coupling portion 221 coupled to the drive shaft 321 of the drive portion 30 at its center.

The driving unit 30 includes a support frame 31 that supports the coating liquid tank 10, a drive body 32 and a support frame that reciprocate the drive shaft 321 with respect to the coating liquid tank 10 and rotate the drive shaft 321. It may include a column 33 that stands on (31) and supports the driving body 32.

The driving body 32 may include a motor (not shown), a reducer (not shown), etc. that transmit power to the drive shaft 321. The driving unit 30 can move the component mounting portion 20 coupled to the driving shaft 321 closer to or away from the coating liquid tank 10 and rotate the component mounting portion 20.

FIG. 2 is a view showing the separated state of the ball stud 2 and the sealing cover 40, and FIG. 3 is a view showing the combined state of the ball stud 2 and the sealing cover 40.

Referring to FIG. 2, the ball stud 2 may include a bolt-shaped coated portion 2a with threads formed thereon and an uncoated portion 2b having a ball-shaped head 2d. The uncoated portion 2b may include a cover area 2c provided on the side of the uncoated portion from the boundary between the coated portion 2a and the uncoated portion 2b.

Referring to FIG. 3, the sealing cover 40 can be installed manually or automatically to surround the cover area 2c of the ball stud 2 in a circular ring shape. The sealing cover 40 may be made of elastic silicone, rubber, etc. The sealing cover 40 can be manufactured easily and inexpensively using a knife mold using a plate-shaped member of silicon or rubber, making it easier to manufacture than conventional sleeves and end caps, and significantly reducing manufacturing costs. The sealing cover 40 is preferably made of a material that does not stain the coating liquid and is easy to clean.

As another embodiment, instead of the single circular ring sealing cover 40 shown in FIG. 3, a sealing unit consisting of a pair of sealing cover parts provided with a plurality of semicircular ring-shaped sealing members may be used. A pair of sealing cover parts may be engaged with each other so that the semicircular ring-shaped sealing member can completely seal and cover the cover area 2c of the ball stud 2. Engagement of a pair of sealing cover parts can be done manually or by a separate engagement drive unit. A pair of sealing cover parts may be engaged with a plurality of ball studs (2) hanging on the insert carrier (50), or may be implemented as a part of the insert carrier (50).

Figure 4 is a diagram showing an insert carrier 50 on which a ball stud 2 coupled with a sealing cover 40 is mounted.

Referring to FIG. 4, the insert carrier 50 may be seated in the slot 21 provided in the component mounting portion 20 of FIG. 1. The insert carrier 50 may be plate-shaped and include a slit 51 extending longitudinally at the center. The head 2d of the ball stud 2 may protrude upward from the slit 51 and the cover area 2c on which the coating portion 2a and the sealing cover 40 are mounted may protrude downward. The slit 51 is open on one side so that the neck portion between the head 2d of the ball stud 2 and the cover area 2c can be easily inserted.

The insert carrier 50 is seated in the slot 21 of the component mounting portion 20 by a robot (not shown) with a plurality of ball studs 2 inserted, and coating and peeling of the ball studs 2 are performed. Afterwards, it can be moved to the drying room while seated in the slot 21 of the component mounting portion 20 or in a separated state.

The insert carrier 50 is not limited to the above-described form, and can be of any shape as long as it has a structure that can be easily attached and detached while exposing the coating part of the machine part on the lower side.

Figure 5 is a block diagram of the coating device 1 for the ball stud 2 according to an embodiment of the present invention.

Referring to Figure 5, the coating device 1 of the ball stud 2 includes a component mounting unit 20, a driving unit 30, a coating liquid supply unit 60, a memory 70, a water level sensor 80, and a processor 90. ) may include. Since the component mounting unit 20 and the driving unit 30 have been described above, their description will be omitted.

The coating liquid supply unit 60 may include a tank filled with the coating liquid, a pipe between the tank and the coating liquid tank 10, and a valve provided in the pipe. The valve may be controlled by the processor 90 based on information on the level of the coating liquid. Accordingly, the processor 90 can supply the amount of coating liquid consumed to the coating liquid tank 10 whenever coating is completed, thereby maintaining the level of the coating liquid at a constant level.

Memory 70 stores non-limiting digitized data. The memory 70 is a non-volatile storage device that can retain data regardless of whether power is provided, and data to be processed by the processor 90 is loaded and can retain data if power is not provided. Contains memory with volatile properties that cannot be stored. The memory 70 includes flash memory, hard-disc drive (HDD), solid-state drive (SSD), read only memory (ROM), buffer, random access memory (RAM), etc. there is.

The memory 70 according to this embodiment may store programs to be executed by the processor 90, raw data detected by the water level sensor 80, etc.

The water level sensor 80 can measure the coating liquid level in the coating liquid tank 10 in real time. Information about the level of the coating liquid is necessary to accurately immerse only the coating portion (2a) of the ball stud (2) mounted on the component mounting portion (20). The coating liquid level information can be used to control the downward movement amount of the component mounting unit 20 or to control the coating liquid supply unit 60 that fills the coating liquid tank 10 with the coating liquid.

The water level sensor 80 may include a sensor using ultrasonic waves, a sensor using water pressure, a floating sensor, etc.

The processor 90 includes one or more hardware processors implemented as a CPU, chipset, buffer, circuit, etc. mounted on a printed circuit board, and may be implemented as a system on chip (SOC) depending on the design method. The processor 90 can control the component mounting unit 20 to raise, lower, or rotate according to a control program that controls the driving unit 30. The processor 90 can maintain the water level of the coating liquid tank 10 constant. The processor 90 may raise or lower the stopper (12 in FIG. 1) depending on the level of the detected coating liquid.

Figure 6 is a flowchart showing a coating method for the ball stud 2 according to an embodiment of the present invention, and Figure 7 shows a state before operation of the coating device 1 for the ball stud 2 according to an embodiment of the present invention. It is a drawing, and FIG. 8 is a drawing showing the state after operation of the coating device 1 for the ball stud 2 according to an embodiment of the present invention.

Hereinafter, a method of coating the bolster 2 will be described with reference to FIGS. 6 to 8.

In step S111, the anti-rust coating liquid is filled to a predetermined level in the container 11 of the coating liquid tank 10 of FIG. 7.

In step S112, the sealing cover 40 is mounted on the cover area 2c of the ball stud 2, as shown in FIGS. 2 and 3.

In step S113, the insert carrier 50 on which a plurality of ball studs 2 are draped is seated on the component mounting portion 20 of the coating liquid tank 10. At this time, the coating portion 2a of the ball stud 2 is exposed downward. The component mounting portion 20 can be done manually or automatically by a robot.

In step S114, as shown in FIG. 8, the component mounting portion 20 is lowered so that the coating portion 2a of the ball stud 2 is immersed in the anti-rust coating liquid. At this time, the descent of the component mounting portion 20 may be restricted as the stopper contact portion 223 contacts the stopper 12 of the coating liquid tank 10. When the component mounting portion 20 is lowered, it is desirable that the boundary between the coating portion 2a of the ball stud 2 and the sealing cover 40 exactly matches the water level of the anti-rust coating liquid. It can be set to go slightly over to the cover 40 side.

In step S115, when the anti-rust coating is completed, the component mounting portion 20 is raised as shown in FIG. 7 to remove the coated portion 2a of the ball stud 2 from the anti-rust coating liquid. Thereafter, the component mounting portion 20 may be rotated at, for example, 250 to 350 rpm to remove the coating portion 2a of the ball stud 2.

In step S116, the ball stud 2 draped on the insert carrier 50 separated from the component mounting portion 20 or on the insert carrier 50 seated in the component mounting portion 20 is moved to the drying room, for example. It can be dried at a temperature of 250 to 350 degrees for about 20 minutes.

For additional anti-rust coating, the amount of rust-prevention coating liquid consumed can be supplied to the coating liquid tank 10, or the amount of descent of the component mounting portion 20 can be increased by the reduced coating liquid level. Additionally, the height of the stopper 12 can be reduced by the reduced coating liquid level.

As described above, the partial coating method for mechanical parts according to an embodiment of the present invention performs coating by immersing only the part to be coated among the mechanical parts, and thus the part to be covered can be minimized. As a result, the sealing cover 40 can be manufactured in the smallest size, so material costs are low and it can be manufactured using an inexpensive knife mold. In addition, since the sealing cover 40 is relatively easy to attach and detach from mechanical parts, it is possible to reduce costs by saving manpower and time, and waste of coating liquid can be reduced by minimizing the amount of coating liquid applied to areas other than the coating area. .

In the foregoing specification, the invention and its advantages have been described with reference to specific embodiments. However, it will be apparent to those skilled in the art that various modifications and changes may be made without departing from the scope of the present invention as set forth in the claims below. Accordingly, the specification and drawings are to be regarded as illustrative rather than limiting. All such possible modifications must be made within the scope of the present invention.

1: Coating device
2: Bolt stud (mechanical part)
2a: coating part
2b: uncoated portion
2c: Coverage area
10: Coating liquid tank
11: Courage
12: stopper
20: Parts mounting part
21: slot
22: base
30: driving part
31: Support frame
32: Driving body
33: column
40: Ceiling cover
50: Insert carrier
60: Coating liquid supply unit
70: Memory
80: Water level sensor
90: processor

Claims (5)

In the coating device for mechanical parts,
A coating liquid tank containing the coating liquid;
a sealing cover surrounding a cover area provided on a side of the uncoated part from the boundary between the coated part and the uncoated part of the mechanical part;
a component mounting portion provided on the coating liquid tank and supporting the mechanical component so that the coating portion of the mechanical component protrudes toward the coating liquid tank;
a driving unit that moves the component mounting portion toward the coating liquid tank so that the coating portion of the mechanical component is immersed in the coating liquid of the coating liquid tank, and operates the component mounting portion to separate the coating portion of the mechanical component from the coating liquid; and
It has a slit that extends longitudinally in the center in a plate shape and is open on one side, and a plurality of the mechanical parts are inserted into the slit so that the coating portion is exposed to the lower side of the slit, and includes an insert carrier mounted on the component mounting portion; ,
The sealing cover is made of an elastic material and has a ring shape of a predetermined width wound along the boundary of the machine part,
The component mounting unit is a coating device for mechanical parts including a plate-shaped base provided with at least one slot on which the insert carrier is mounted. delete According to paragraph 1,
A water level sensor that detects the level of the coating liquid in the coating liquid tank; and
A coating device for mechanical parts, further comprising a processor that controls the amount of approach movement of the component mounting portion with reference to the level of the coating liquid detected by the water level sensor. According to paragraph 1,
a coating liquid supply unit that supplies the coating liquid to the coating liquid tank;
A water level sensor that detects the level of the coating liquid in the coating liquid tank; and
A coating device for mechanical parts further comprising a processor that controls the coating liquid supply unit to fill the coating liquid tank with the coating liquid in reference to the level of the coating liquid detected by the water level sensor. In the partial coating method of mechanical parts,
Filling the coating liquid tank to a predetermined level;
Surrounding the cover area on the side of the uncoated part from the boundary between the coated part and the uncoated part of the mechanical part with a sealing cover;
Placing a component mounting portion on which the mechanical component is supported on the coating liquid tank;
An insert carrier is provided with a plate-shaped insert carrier extending longitudinally in the center and having a slit open on one side, and a plurality of the mechanical parts are inserted into the slit through one open side so that the coating portion is exposed to the lower side of the slit. Mounting the component mounting portion;
Approaching the component mounting portion toward the coating liquid tank and immersing the coating portion of the mechanical part in the coating liquid of the coating liquid tank;
separating the coating portion of the mechanical part from the coating liquid; and
It includes the step of separating the insert carrier from the component mounting portion and transferring it to a drying room to dry the mechanical component,
The sealing cover is made of an elastic material and has a ring shape of a predetermined width wound along the boundary of the machine part,
The component mounting portion is a method of coating a mechanical component including a plate-shaped base provided with at least one slot on which the insert carrier is mounted.