JPS6044072A - Coating method and apparatus therefor - Google Patents

Abstract

PURPOSE:To automatically coat the end surface of an article to be coated and to easily obtain a beautiful and uniform coated surface, by bringing the article to be coated placed on a vertically falling support rod into contact with the paint layer having a uniform thickness on the outer peripheral surface of a drum synchronous to a falling speed. CONSTITUTION:A handle 11 is revolved to set the gap of left and right coating drums 13, 12 fitted to the width of an article to be coated, for example, a hinge and a motor is operated to rotate both drums to a direction shown by the arrow. At the same time, a chain belt 22 is run to rotate both drums at a low speed in synchronous relation to the running speed of the belt 22. Herein, the hinge is placed to a support rod 23, which falls at a low speed while guided by the rail 19 provided to the belt 22 in a protruded state, at an accurate left and right position in such a state that one end surface thereof is brought into contact with the guide surface of a guide 18. When the hinge passes the sides of the drums 13, 12 of which the lower parts are immersed in the paint liquid within containers 15, 14, the paint is uniformly and beautifully adhered to the end surface of the hinge.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a coating method and apparatus for coating the end surface of an article.

When manufacturing various products 9, such as hinges.

The hinge (2) component is formed by cutting the elongated hinge body into a predetermined size, which has been molded into a predetermined cross-sectional shape and has holes drilled in predetermined portions.

Therefore, since the painting of the hinge described in -1- is applied at the manufacturing stage of the H length body, the cut surfaces of the individual hinge parts are An unpainted surface is formed and the metal surface is exposed.

However, it becomes necessary to repaint only the cut surfaces of the hinge parts that have been cut and folded into two pieces at the edges.

Conventional Karuru painting I1-up work is done by hand. Therefore, the above-mentioned painting process is not only inefficient and makes mass production of hinges difficult, but also the cut surface of the hinge is coated only on the cut surface. When immersed in paint liquid, the amount of paint applied tends to be uneven.5 Moreover, it can also be seen on the mathematical surfaces of other parts of the same hinge part.
11 coats of paint stain this math mask.
There is. Also, if the same LJJ cross section of the hinge part is painted with a brush or the like, so-called uneven coating will occur and brush marks will remain on the cut painted surface, so 1r12. : A uniform painted surface is formed.N
There are some drawbacks. Especially.

The cut surface of the hinge part is a double 9In (
3) Since it has a shape and must be applied to a narrow end surface, it is difficult to achieve a beautiful uniform coating surface. 7 was even more troublesome for iJ and V.

The present invention solves the above-mentioned conventional drawbacks, and automatically coats end surfaces such as hinge cut surfaces.

The object of the present invention is to provide a coating method and apparatus that can easily obtain a beautiful uniformly coated surface.

That is, in the first invention, the object to be coated is placed at a fixed position on a vertically descending support rod, and a uniform thickness is placed on the outer peripheral surface of a coating tram that rotates in synchronization with the descending speed of the support rod. After forming a paint layer, when the object to be coated on the support rod passes beside the outer circumferential surface of the coating drum, a predetermined surface of the object to be coated is A coating method characterized by applying the coating while following the movement of the outer peripheral surface while making contact.

The gist is as follows.

In addition, the second invention includes a number of support rods for placing objects to be coated that travel vertically downward, and a coating member that is rotatably pivoted to the side of the descending route of the support rods so that the outer circumferential surface of the drum faces. a drum for coating, a means for adjusting the lateral displacement (4) of the ram, a paint container for applying paint liquid to the outer circumferential surface of the drum for coating, and a means for adjusting the lateral displacement (4) of the ram, a paint container for applying the paint liquid to the outer circumferential surface of the drum for coating, and a means for adjusting the lateral displacement (4) of the ram; a paint adhesion regulation plate for forming a thick paint layer;
The present invention is characterized by comprising a motor that synchronizes the descending speed of the support rod and the rotation of the drano! ! The gist of the device is:

To explain the specific embodiment of the present invention in more detail based on the drawings, (1) is a pedestal frame, and guide shafts (2) and (3) are provided at a part and a lower part of the pedestal frame (1), respectively.
horizontally suspended, and a drum interval adjustment shaft (4) horizontally suspended at the intermediate position of the two-pronged support shafts (2) (3).
) and (4) are installed in parallel. (5) and (6) are a pair of left and right support plates supported by the bipolar support shafts (2) and (3), and the bipolar support plates (5) and (6) are respectively It is erected astride the support shafts (2) and (3), and is supported so as to be movable in the axial direction of the guide support shafts (2) and (3). Mounting frame (1
) is rotatably supported by bearings (7), (5), and (8) fixed to the
A threaded portion (4a) is formed on the outer peripheral surface of 4). Then, the screw holes (9) (10) provided on the backs of both support plates (5) (f;
) are capped with Ni1N, and both screw holes (9) and (10) of the support plates (5) and (6) are provided with mutually opposite threads, and the drum spacing and 1JIJ node axis (4) are By rotating an operating handle (11) protruding from one end, the support plates (5) (G) can be brought closer or separated from each other, and the distance between them can be adjusted as desired.

(12) and (13) are coating drums rotatably mounted on the support plates (5) and (6), respectively.

The painting drums (12) and (13) are installed at a position where the heights of the left and right drums J are slightly different from each other when their outer peripheral surfaces face each other, and the right painting drum (12)
The left painting ram (13) and the support plate (5) are provided integrally with the support plate (6) so as to be interlocked in the left-right axis direction. (14) and (15) are paint containers disposed below each of the painting drums (12) and (13) (6) and mounted on the support plates (5) and (6), respectively; The upper ends of the paint containers (1, 1) (15) are open, and the paint liquid is stored inside the containers, and the lower parts of the 1 coating rams (12) (13) are respectively connected to the paint containers (+4) ( 15) is installed in a state where it is immersed in the paint liquid inside. (16) and (+7)
II) the paint plate placed above the painting ram (12) (+3) and attached to the support plate (5) (6);
11111, and the paint adhesion amount regulating plate (16)
(17) 1) has a board width that is almost the same as the width of the above-mentioned IS, and is slightly spaced apart from the circumferential surface of the tram (12) (+3), with paint adhering to it. Volume regulation plate (16)
A slight gap is formed between the lower end of (17) and the circumferential surface of the drum (+2> (13)). A guide for determining the position of the object to be coated (1) provided, the guide (1B) is provided so as to be able to independently move laterally with respect to the support plate (6), and a guide for the guide (1) is provided. The surface (18a) forms a vertical surface, and its extension line is usually the support plate (6).
) is used in a state where the outer right end surface of the 1' ram (13) for painting is almost coincident with (7).

(19) is a guide rail erected at the center of the front of the mount frame (1), and (20) is a guide rail (
The first sprocket (19) is rotatably pivoted toward the top of the guy (1), and the second sprocket (21) is rotatably pivoted below the lower end of the rail (1!). It is.

(22) is the first. 2nd sprocket (20) (2
1) A non-α1;11 chain heald suspended between the chain healds (22) and support rods (23) placed at appropriate intervals to support the object to be coated in a stable state. A large number of protrusions are provided, and the section where each of the support brackets (23) descends from the first sprocket (20) to the second sprocket (21) as the chain bell (22) travels is connected to the guide. Support rod (2) by rail (19)
The proximal end component of 3) is configured to be guided,
Each support rod (23) is attached to the coating drum (12).
(13) runs on the central vertical line between them. (8) since the descending route of each support rod (23) and the vertical center line between the left and right drums (12) and (13) coincide. Each of the support rods (23) is pivotally supported in the outer circumferential direction with respect to its base end component so as to be able to rotate slightly in an arc.

(M> is a motor, and 3 the motor (M) is.

The second sprocket (21) on the driving side is rotated to run the chain on the central vertical line between both drums (12) (13), and at the same time the right painting drum (12) is rotated.
counterclockwise, and the left coating drum (
13) in a clockwise direction.

Each gear is configured to transmit power. still.

The descending speed of each support rod and the inner coating drum (12) (13)
) is synchronized with the rotational circumferential speed of the outer peripheral surface.

In the structure of 2, for example, a hinge part is employed as the object to be coated, and the cut surface of the hinge part (A>).

That is, both end surfaces (B) (C) of the hinge part (A) shown in FIG.
) is painted as follows.

First, rotate the operating handle (11) to install the left and right painting drums (
12) Determine the mutual distance in (13).

In this case, by rotation of the operating handle (11).

(9) The left and right support plates (5) (6), which are screwed onto the drum spacing adjustment shaft (4) and have reverse threaded screw holes (9) (10), are connected to both the upper and lower guide support shafts (2) ( 3), the painting rams (12) and (13) pivotally connected to both support plates (5) and (6), respectively, move toward or away from each other while being guided by the first. 2nd subl: 1 piece I-(20) (21) with the vertical chain held (22) hooked between them as the center line, always approach or separate from each other at equal distances on the left and right to maintain a predetermined accurate position. determined by the position.

Next, the motor (M) is activated. By the operation of this motor (M), a pair of left and right painting drums (12) (13
) in a predetermined direction and at the same time run the chain belt (22) to connect the two cars and one ram (,12) (1
The rotation of 3) is synchronized at low speed with the running speed of chain bell l-(22).

Therefore, the hinge part (A) is placed on two sides of the support rod (23) which is protruded from the chain heald (22) and has descended at low speed while being guided by the guide rail (19).

In this case, one end surface (B) or (C) of the hinge part (A)
The support rod (
23) Since the hinge component (A) is placed on the support rod (23), the left and right positions of the hinge component (A) are accurately determined.

The hinge part (A) placed on the support rod (23)-J: descends while sliding on the guide surface (18a) of the guider (1B), and passes next to the left coating drum (13). While passing, paint is applied to one end surface (B) or (C) of the hinge part (A), and the paint is applied to one end surface (B) or (C) of the hinge part (A) while passing by the right painting drum (12). Other end surface (C) or (B
) is coated with coating l.

That is, as shown in FIG. 4, the paint containers (14) (15)
When the coating drums (12) and (13), whose lower part is immersed in the coating*1 liquid inside the drum, rotate at a low speed.

A large amount of highly viscous paint liquid adheres to the outer peripheral surface of the drum (12) (13), and when the drum (12) (13) rotates further, part of the large amount of paint liquid adhered to the outer peripheral surface of the drum is removed. is limited by the lower end of the paint adhesion amount regulating plate (16) (17), and the paint liquid passing through the lower end of the regulating plate <16) (17) is transferred to the drum (12) (13) (11).
) Form a uniformly thick paint layer on the outer circumferential surface.

On the other hand, when the hinge part (A) placed on the support rod (23) -1- passes by the coating drum (12) or (13), the end face (B) of the hinge part (A) or (C
) descends while contacting the uniformly thick paint layer on the outer peripheral surface of the drum (12) or (13) at a synchronous speed, so that the end face (B) or (C) of the hinge part (A) is coated with paint liquid. is attached.

Therefore, the M11 surface (B) or (C) of the hinge part (A)
When the hinge part (A) and the support rod (23) that supports it come into contact with the uniformly thick paint layer on the outer peripheral surface of the drum (12) (13), the hinge part (A) and the support rod (23) that can support it integrally form the 1' ram (12) (13). The paint liquid is deposited by rotating in an arc while following the movement of the outer peripheral surface of the cylinder.

In other words, the hinge part (A), which has descended while being stably supported by the support rod (23) J:, further descends from the hinge part (A1) and reaches the left side, as shown in Figure 6. when passing by the drum (13).

The hinge part (A2) follows the movement of the outer peripheral surface of the drum (13).
) and the support rod (23) both rotate slightly to the left (12〉) and extend, and gradually move back from the tilted state to the original horizontal state, one end surface of the hinge part (83) ( B) is applied. When the horizontal hinge part (A4) further descends and passes beside the right coating drum (12), the outer periphery of the drum (]2) Following the plane movement, the hinge part (A5) and the support rod (23) rotate slightly to the right and tilt, and while gradually returning from the tilted state to the original horizontal state, the hinge part (A6) ) is coated on the other end surface (C), and the hinge part (A7) is lowered while maintaining the horizontal state. Therefore, both end faces (B) and (C) of the hinge part (87) are coated. A beautiful uniform coating is applied.

When the hinge part (A) coated on both end faces (B) and (C) is further lowered while being placed on the support rod (23), the chain con hair running below it as shown in Figure 2. (
24) Automatically transported to the designated location 11! !
sent.

In the embodiment described in -, a pair of coating drums for coating the end surfaces of objects to be coated were provided on the left and right sides of the descending route of each support rod (23). The coating drum may be pivotally mounted only on either the left or right side. In addition, in the same example, the left and right side painting drums (1
2) Although (13) is configured to be able to be adjusted horizontally at equal intervals at the same time centering on the descending route by means of the drum interval adjustment shaft (4), it is not necessarily limited to this structure. (12) and (13) may be independently adjusted in lateral movement using separate structures.

Any of these is included within the scope of the present invention.

Although the hinge component (A) is exemplified in the embodiment as the object to be painted, it goes without saying that the type of object to be painted is not limited.

Since the coating method and apparatus according to the first invention and the second invention have the above-mentioned configuration, they exhibit remarkable effects as described below.

a) Mass production of products is realized because painting work is carried out efficiently. In other words, it is only necessary to place the object to be coated in a fixed position on each support rod that is drawn out and lowered in sequence, and the gap is automatically adjusted while the object to be coated on the support rod passes by the side of the coating drum. Since the coating is applied in a consistent manner (14), the coating work itself is carried out extremely efficiently, which, together with the rapid production of the product, promotes a large 1J reduction in coating costs.

1)) Since the end surfaces of the object to be coated are coated using the coating tram, it is possible to easily and reliably form a beautiful uniformly coated surface. That is, the speed at which the object to be coated placed at a fixed position on the support rod descends is equally synchronized with the rotational circumferential speed of the outer peripheral surface of the coating ram.

■1 A layer of uniformly thick paint is formed in a predetermined circumferential area on the outer circumferential surface of the coating drum, and the predetermined surface of the object to be coated follows the movement of the drum's outer circumferential surface in this uniformly thick paint layer. This is because the paint is applied through contact with the surface.

Not only do so-called uneven coatings and brush marks occur on the painted surface of a product finished in this manner, but also no so-called uneven coating or brush marks occur.

The amount of paint applied is uniform and the paint is applied only to the specified surface of the object to be painted. Dirty the mask
There is no danger that you might end up talking about it. Moreover, even when it is necessary to paint a surface with a complex shape and a narrow end face, such as a cut surface of a hinge part, it is possible to easily and reliably form a beautiful uniformly painted surface without leaving any unpainted parts. I can do it.

C) Furthermore, the coating device according to the present invention has the following features: a) and b)
), the device has a simple structure and is easy to manufacture.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a front view of the coating device according to the present invention, Fig. 2 is a side view of the device, Fig. 3 is a plan view of main parts of the device, and Fig. 4 is a front view of the coating device according to the present invention. FIG. 5 is a perspective view of a hinge component shown as an example of an object to be painted, and FIG. 6 is an explanatory view showing a painting process for an object to be painted. (1) is the mount frame, (2) and (3) are the guide shafts,
(4) is the drum interval adjustment shaft, and (4a) is the threaded part. (5) (6) are the support plates, (9) and (10) are the screw holes. (11) is the operating handle, (12) (13) is the painting tram, (14) (15) is the paint container, (16) (
17) is the paint adhesion amount regulating plate, (18) is the guider for positioning the object to be painted (16), (19) is the guide rail, (20) is the first sprocket, (21) is the second sprocket, and (22) is the Chain bell l-, (23) is a support rod, and (M) is a motor. Patent applicant Arami Kogyo Painting Co., Ltd. - Hokuko Co., Ltd. Agent Patent attorney Kenzo Hara (17) 449-

Claims (1)

[Scope of Claims] 1. An object to be coated is placed on a fixed position of 1. a vertically descending support rod. When a thick paint layer is formed and the object to be painted on the support rod passes beside the outer peripheral surface of the coating drum, a predetermined surface of the object to be painted is formed on the drum with respect to the uniformly thick paint layer on the outer peripheral surface of the drum. A coating method characterized by applying the coating while following the movement of the outer peripheral surface while making contact. 2. A large number of support rods for placing objects to be coated that travel vertically downward, and a coating ram rotatably pivoted with the outer peripheral surface of the drum facing the side of the downward route of the support rods; means for adjusting the lateral displacement of the coating drum; a paint container for depositing a coating liquid on the outer circumferential surface of the coating drum; and a container for forming a uniformly thick coating layer on the outer circumferential surface of the drum. Paint adhesion control board. (1) A coating apparatus characterized by comprising a motor that synchronizes the descending speed of the support rod and the rotation of the drum. 3. The coating device according to claim 2, wherein the support rod is pivotally supported to be rotatable in an arc in the outer circumferential direction with respect to the base end component thereof. 4. Claim 2, wherein the coating drum is provided on the left and right sides of the descending route I of the support rod, and the descending route of the support rod is located on the central vertical line between the left and right side tiger spaces.
Painting equipment described in section. 5. The means for adjusting the lateral displacement of the coating drum is provided so that the left and right coating drums can be laterally moved at equal intervals at the same time about the descending loop 1- of the support rod as a center line. Coating equipment according to scope 4.