JP2811505B2 - Painting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a coating apparatus suitably used for coating, for example, a body of an automobile.

[Conventional technology]

Generally, a pair of pillars provided at left and right positions across a conveyor line and having a slide hole on an inner surface, a movable pillar guided between the slide holes of the respective pillars and moving upward and downward, and A coating apparatus including a coating machine that is provided on a movable support and moves in the left and right directions is well known.

When a body of an automobile as an object to be coated is coated by this type of coating apparatus, the column and the movable column are moved while the body is conveyed by a conveyor line, and the coating is performed by following the shape of the body. The body is painted by keeping the distance between the machine and the body constant and spraying paint from the painting machine.

[Problems to be solved by the invention]

By the way, in the above-mentioned conventional coating apparatus,
The moving column moves up and down in the slide hole formed in each column according to the shape of the body. When the coating machine is above the column, the paint sprayed from the coating machine The paint may intrude into the slide hole, and the intruded paint adheres to the drive motor, speed reducer, chain, lifting rail, position detection sensor, etc. provided in the slide hole. There is a problem in that the coating cannot be performed smoothly, and as a result, "drip phenomenon", "uneven coating" and the like on the paint surface of the body occur. For this reason, in the prior art, a curtain was attached to the lower side of the moving support, and the slide hole was concealed by the curtain, thereby preventing paint from entering the slide hole.

However, recent painting equipment has been designed to lengthen the slide holes provided on each column and to move the column, so that a single unit can also paint the vertical surface such as the front and rear parts in addition to the roof of the automobile body. The device is designed to move vertically along the slide hole with a large stroke. In such a coating apparatus, even if a curtain that covers the slide hole of each column is attached as described above, when the moving column is moved downward, the lower side of the curtain comes into contact with the floor surface of the coating booth, There is a problem that the curtain is bent or loosened, and that the slide holes cannot be reliably concealed, so that paint enters the slide holes.

The present invention has been made in view of the above problems of the prior art,
An object of the present invention is to provide a coating apparatus in which a slide hole of each column can be securely hidden by a curtain.

[Means for solving the problem]

In order to solve the above-described problem, the feature of the configuration adopted by the present invention is that a support arm located near each column and protruding from both end side surfaces of the movable column and a slide hole of each column is provided. A curtain hung from each of the support arms so as to conceal, and provided so as to wind the inner and outer surfaces and the upper and lower surfaces of each of the columns, one end of which is fixed to the support arm, and the other end of which is a hanging end of the curtain. And a guide member provided at each corner of each of the columns to guide each of the connecting members.

Furthermore, it is preferable to provide a spring for applying tension in the middle of each of the connecting members.

[Action]

According to the above configuration, as the moving support moves upward and downward, the curtain and the connecting member move so as to cover the outer peripheral side of each support via the guide member, and the lower end of the curtain is placed on the floor of the painting booth. Contact with the surface can be prevented.

Further, the tension of the curtain and the connecting member can be kept constant by the spring.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. In this embodiment, a body of an automobile will be described as an example of the object to be coated.

In the drawing, reference numeral 1 denotes a coating apparatus according to an embodiment of the present invention, 2 denotes a conveyor line, and the conveyor line 2 holds an automobile body 3 as an object to be coated in a direction indicated by an arrow A (hereinafter, referred to as a “transport direction A”). It comprises a moving carrier 2A, a conveyor 2B for moving the carrier 2A, a motor (not shown) for driving the conveyor 2B, and the like.

Reference numerals 4 and 4 denote a pair of guide posts, which sandwich the conveyor 2B and are installed in parallel in the left and right directions along the conveying direction A of the conveyor 2B, and are formed in a gate shape by prismatic columns. Are vertical pillars 4A, 4A extending in the vertical direction, upper connecting pillars 4B in which the distal ends of the vertical pillars 4A are connected by means of welding or the like, and means such as welding of an intermediate part of the vertical pillars 4A. And the connecting columns 4B, 4C
And a rail groove (not shown) formed on the upper side of C. The base end of each vertical strut 4A is a large-diameter fixing portion 4A ₁ is formed, (not shown) the respective fixing portions 4A ₁ volt is solidly fixed to the installation location of the coating apparatus 1 by such I have.

Reference numerals 5 and 5 denote a pair of longitudinally-moving struts provided inside the guide struts 4 and serving as a pair of struts formed in the shape of a rectangular prism. Slide portions 5A, 5A held in rail grooves on the upper connecting column 4B and the intermediate connecting column 4C of each guide column 4 are located at the positions.
Each of the protrusions is provided with a slide hole 5B on the inner side surface, on which a vertical support 6 to be described later moves upward and downward (XX) from the upper side to the lower side. A forward / backward moving device (not shown) constituted by a drive motor or the like is mounted in the sliding portion 5A of each of the forward / backward moving columns 5, and the forward / backward moving device interlocks with the transport speed of the conveyor 2B and the like. Is driven to rotate, or driven independently of the conveyor 2B,
Each slide part 5A is connected to each upper connecting column 4B and each intermediate connecting column 4C.
By sliding in the front and rear (Z-Z) directions on the rail groove, the front / rear moving columns 5 are moved in parallel in the front and rear (Z-Z) directions.

Numeral 6 denotes a vertical moving support as a moving support provided with both ends inserted into the slide holes 5B of the respective front and rear moving supports 5 so as to connect the front and rear moving supports 5 to each other. Left and right moving brackets 7 to be described later are provided on the front side surface, left and right (Y
A slide hole 6A that is moved in the −Y) direction is formed. Both ends of the vertical moving column 6 are connected to a part of a chain of a vertical moving device (not shown) including a driving motor, a chain, a sprocket, a guide rail and the like housed in each of the front and rear moving columns 5. By operating the vertical movement device, both ends of the vertical support 6 are moved up and down (X-
X) and move the vertical motion support 6 up and down (X-
Move in the X) direction. The vertical support 6 follows the front, rear, and inclined surfaces of the body 3.

Reference numeral 7 denotes a left-right moving bracket provided in the slide hole 6A of the vertical moving column 6, and the left-right moving bracket 7 projects from the slide hole 6A and is formed in an L-shape. The left-right moving bracket 7 is connected to a part of a left-right moving device (not shown) composed of a drive motor, a chain, a sprocket, and the like housed in the vertical moving column 6, and the left-right moving device 7 By moving inside the slide hole 6A of the vertical support 6 in the left and right (Y-Y) directions,
The body 3 is painted leftward and rightward.

Reference numeral 8 denotes an air motor fixed in the axial direction of the left and right movement bracket 7, the air motor 8 includes a speed reducer having a bevel gear mechanism, and a rotating shaft provided at the tip end of the air motor 8 by supplying and discharging air. 9 is controlled in the rotation (RR) direction.

10, 10 are located on the tip side of the left and right movement bracket 7,
A coating gun as a coating machine provided on both sides of the rotating shaft 9 is shown. Each of the coating guns 10 is constituted by, for example, an electrostatic air atomizing gun, and a coating nozzle (not shown) is provided on a tip side. The paint is sprayed from the paint nozzle toward the body 3. Then, the spraying direction of the paint of each coating gun 10, that is, the rotation (R-
Control is performed at a predetermined angle in the R) direction.

Further, reference numerals 11 and 11 denote support arms protruding from both side surfaces of the respective vertical moving columns 6, and the support arms 11 are connected to the curtain 12 via ropes 13 and 13 described later.

Reference numeral 12 denotes a support arm positioned on the lower side of the vertical support 6.
From the curtain 12
Is made of a non-combustible material, as shown in FIGS. 2 and 3,
When the vertical support 6 is on the upper side, the curtain
Numeral 12 is formed in a plate shape having a size capable of concealing the slide hole 5B of the front-rear moving column 5, and support shafts 12A and 12B are fixed to both upper and lower ends of the curtain 12, respectively.

13,13, one of the left and right front and rear moving supports 5
, Two connecting members which are arranged so that the inner and outer surfaces and the upper and lower surfaces are wound, 14, 14,. 8 shows a guide member as a guide member. The ropes 13 and 13 are wound around the column 5 by the guide rollers 14 and are guided. One end of each rope 13 is connected to a support shaft 12A, and the other end is connected to a support shaft 12B. The rope 12 is connected to a support arm 11 on the way to position the curtain 12 with respect to the vertical support 6. It has become. Note that the support arm 11 and the support shaft 12A are connected by a part of the ropes 13 and 13, but the support arm 11 or the support shaft 12A is formed in an angle so that the support arm 11 is curtained. 12 may be directly attached.

Reference numerals 15 and 15 denote springs provided in the middle of each of the ropes 13. Each of the springs 15 winds the rope 13 and the curtain 12 around the back-and-forth moving column 5 with a constant tension.

Note that, of the left and right front and rear moving columns 5, the other column 5 has the same configuration.

Although the present embodiment is constructed as described above, in the method of coating the body 3, in order to cause each coating gun 10 to follow the painted surface of the body 3, each of the front and rear moving supports 5, the vertical moving supports 6, and the left and right moving brackets 7 are used. , The front-rear (Z-Z) direction, the left-right (Y-Y) direction, the up-down (XX) direction, and each coating gun.
By controlling the direction of coating rotation (RR) of 10 and keeping the distance between the body 3 and each of the coating guns 10 constant, the entire surface of the body 3, including the roof, front and rear, is painted. It has become.

When the vertical support 6 moves downward as shown in FIG. 4, the curtain 12 attached to each of the vertical support 5 also moves along with the vertical support 6. The curtain 12 moves from the upper portion to the lower portion, and the lower end side of the curtain 12 moves so as to cover the guide roller 14 located inside and below the front and rear moving support 5. That is, even when the vertical movement support column 6 moves downward, the slide holes
5A can be concealed, and the slide hole 5B can be shielded for each coating gun 10. Further, it is possible to prevent the lower end side of the curtain 13 from contacting the floor surface.

Thus, in the present embodiment, each curtain 12 is moved around the outer periphery of each of the front and rear moving columns 5 as the respective curtains 12 are moved up and down by the vertical moving columns 6. The paint that has entered the slide hole 5B can be reliably prevented from entering the slide hole 5B, and the paint that has entered the slide hole 5B adheres to the drive motor, speed reducer, chain, lifting rail, etc.
It is possible to effectively prevent the movement of the vertical support 6 from becoming slow, and to remarkably improve the workability during maintenance and maintenance of the coating apparatus 1. As described above, since the movement of the vertical support column 6 can be made smooth, as a result, the "drip phenomenon" and "uneven coating" on the painted surface of the body 3 can be prevented.
A beautiful paint finish can be performed.

Further, by each spring 15, each rope 13 and each curtain
Since the tension of 12 can always be kept constant, the bending of the end of each curtain 12 can be reliably prevented, and the curtain 12 and the rope 13 etc. can be reliably prevented from coming off the guide roller 14. Can be. Then, it is possible to more effectively prevent the paint from entering the slide hole 5B from each paint gun 10.

In the above embodiment, the case where the air atomizing gun is used as the coating machine has been described as an example. However, the present invention is not limited to this, and a bell type coating machine may be used. In addition, the coating gun 10 is provided as a pair, but may be one, or may be connected in a large number in the left and right directions.

Further, in the above-described embodiment, the rope 13 is used as the connecting member, but the present invention is not limited to this, and a chain, a V-belt, a wire, or the like may be used. Instead, a sprocket, a pulley, or the like may be used.

Further, in the above-described embodiment, a case has been described in which the pair of front and rear moving columns 5 that move the columns in the front-rear (ZZ) direction is used. However, the present invention is not limited to this, and the guide columns 4 are not provided. A type that does not move in the front-rear direction may be used, and in this case, the column may be configured as a fixed column having a slide hole fixed to the floor surface of the painting booth.

Furthermore, in the above-described embodiment, the body 3 of the automobile is taken as an example of the object to be coated, but the present invention is not limited to this, and any object to be electrostatically coated can be used for household appliances and the like. It is also possible.

〔The invention's effect〕

As described in detail above, according to the present invention, the support arm is provided to project from both side surfaces of the movable support column that moves in the vertical direction,
A curtain concealing a slide hole of each column is hung down from the support arm, and the inner and outer surfaces and upper and lower surfaces of each column are connected so as to be wound through guide members provided at corners of the columns. A member is provided, and one end of the connecting member is fixed to the support arm, and the other end is fixed to the hanging lower end of the curtain. Since the curtain is wound under the pillar, it is possible to prevent the curtain from coming into contact with the floor surface of the painting booth and causing bending or loosening. This ensures that paint sprayed from the paint gun is prevented from entering the slide hole, and the movable strut is moved upward by the paint that has entered the slide hole.
It is possible to prevent the downward movement from becoming slow, and to prevent the "dripping phenomenon" and "uneven coating" from occurring on the painted surface of the object to be coated. Performance can be improved.

In addition, since the connecting member wound around the support and the spring for keeping the tension of the curtain constant are provided, it is possible to reliably prevent the rope from coming off from each guide roller and to conceal the slide hole. Of the paint can be reliably prevented, and the prevention of the paint from entering the slide hole can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a coating apparatus showing an embodiment of the present invention, and FIG.
The figure is a sectional view taken in the direction of the arrows II-II in FIG. 1 showing the pillars on which ropes, curtains, guide rollers, etc. are attached, FIG. 3 is a left side view of FIG. 2, and FIG. 3
It is a left view similar to a figure. 1 ... Coating device, 2 ... Conveyor line, 3 ... Body, 4 ... Guide support, 5 ... Back and forth moving support (support), 5B
…… Slide hole, 6… Vertical moving prop (moving prop), 10…
... Coating gun (coating machine), 11 ... Support arm, 12 ... Curtain, 13 ... Rope (connecting member), 14 ... Guide roller (Guide member), 15 ... Spring.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuaki Toshima 1608-16 Tomizuka-cho, Hamamatsu-shi, Shizuoka (56) References JP-A-4-166254 (JP, A) Japanese Utility Model Application Showa 64-5663 (JP, U (58) Field surveyed (Int. Cl. ⁶ , DB name) B05B 15/04 B05B 13/00-13/04

Claims (2)

(57) [Claims] 1. A pair of columns provided at left and right positions across a conveyor line and having a slide hole on an inner surface thereof, and a movable column guided between the slide holes of each column to move upward and downward. And a coating device provided on the moving support and comprising a coating machine moving in the left and right directions, wherein a support arm is provided near each of the supports and protruding from both side surfaces of both ends of the moving support. A curtain hung from each support arm so as to conceal the slide hole of each support, and provided to wind the inner and outer surfaces and upper and lower surfaces of each support, and one end side is fixed to the support arm, The other end side is constituted by a pair of connecting members fixed to the hanging lower end of the curtain, and guide members provided at the corners of the columns to guide the connecting members. Painting equipment. 2. The coating apparatus according to claim 1, wherein a spring for applying tension is provided in the middle of each of the connecting members.