JPH0557216A - Coating apparatus - Google Patents

Abstract

PURPOSE:To obtain a coating apparatus capable of preventing the degradation of a coating quality by arranging a work carrying means in the side area of a work supporting rod oscillating the work supporting rod and mutually releasing a rack and a pinion constituting a work rotating means. CONSTITUTION:When the work W is set at the work supporting rod 3, by applying the rotating force in the clockwise direction centering a supporting axis 8a caused by the weight of the work W, the work supporting rod 3 is located at a rotational operating position mutually engaging a sprocket 3A and a pin 10A. When the carrying conveyer 5 is operated, the work supporting rod 3 moved relatively against the pin 10A of an endless chain 10, so the sprocket 3A rotates and the work supporting rod 3 rotates and the work W is rotated and carried. A coating material is sprayed against the work W being rotated and carried in the coating booth from an automatic coating machine, thereby the degradation of the coating quality is suppressed by controlling the coating so as to obtain the optimum finish state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus, and more particularly to a coating apparatus configured to apply an object to be coated while conveying the object in a predetermined direction.

[0002]

2. Description of the Related Art A conventional coating apparatus A of this type shown in FIG. 13 is a hanger B for holding a work W as an object to be coated.
And the work W through the hanger B to the coating booth C
The hanger B has a rod shape extending in the up-and-down direction, and a work (object to be coated) W is provided via a protruding jig b. Hanging vertically. Based on the operation of the overhead conveyor D, the work W is conveyed in the coating booth C in a direction orthogonal to the paper surface, and at this time, the spray gun F of the automatic coating machine E provided in the coating booth C.
The work W is painted by spraying paint from the work W.

[0003]

By the way, in the above-mentioned conventional coating apparatus A, since the overhead conveyor D is located above the work (object to be coated) W held by the hanger B, the conveyor is not provided. Iron powder, oil, and the like falling from D are likely to adhere to the surface of the work W, which may lead to deterioration of coating quality of the product. Further, in the above-mentioned conventional coating apparatus A, since the work W is hung vertically on the hanger B, the paint sprayed on the work W easily flows downward due to its own weight, and therefore the coating film is applied to the upper and lower parts of the work W. May have different thicknesses, so that the smoothness of the coating film may not be obtained and the coating quality may be deteriorated. In view of the above situation, the present invention has an object to provide a coating apparatus capable of preventing deterioration of coating quality of an object to be coated, and at the same time, easily confirms the coating state of the object to be coated during transportation. It is an object of the present invention to provide a coating device that can be used.

[0004]

Therefore, in the present invention, a work supporting rod for holding an object to be coated is extended in the horizontal direction, and the work supporting rod is rotatably supported about an axis so as to be predetermined. The work transfer means for moving along the direction is provided on the apparatus base in such a manner as to occupy the lateral area of the work support rod, and further the rack is provided on the apparatus base and the pinion means provided on the work support rod. A work rotating means for drivingly rotating a support rod around an axis is constituted, and the work means is provided between the work conveying means and the work support rod along a direction in which the rack means and the pinion means can be disengaged from each other. The above object is achieved by providing a swing support means for swingably supporting the support rod.

[0005]

According to the above construction, by disposing the work transfer means in the lateral region of the work support rod, it is possible to prevent the oil or the like dropped from the work transfer means from splashing on the object to be coated, and By rotating the coated object around the horizontal axis, a smooth coating film can be obtained over the entire coated object. Further, according to the above configuration, the work supporting rod is swung through the swing supporting means, and the rack means and the pinion means constituting the work rotating means are disengaged from each other, thereby arbitrarily stopping the rotating operation of the work. You can

[0006]

The present invention will be described in detail below with reference to the drawings illustrating the embodiments. 1 to 12 show an example in which the coating apparatus according to the present invention is applied to a spray booth in a coating line for a fuel tank of a motorcycle. In a coating apparatus 1 shown in FIG. 1, a work support rod 3 for holding a work W as an object to be coated is provided inside a coating booth main body 2 as a device base, and this work support rod 3
And a work transfer means 4 for moving the work W in a predetermined direction via the.

The work supporting rod 3 is disposed in the middle of the coating booth main body 2 in a horizontally extending manner as is apparent from the drawing, and is located on the side separated from the side wall 2a of the booth main body 2. The work W is set at the end through a jig (not shown), while the sprocket as a pinion means constituting a work rotating means 20 described later is provided at the end near the side wall 2a. 3A is fixedly installed.

On the other hand, the work transfer means 4 includes a transfer conveyor 5 installed on the side wall 2a of the booth body 2, in other words, on a side area of the work support rod 3, and a hanger 6 suspended from the conveyor 5. As shown in FIG. 4, the conveyor 5 is extended in the horizontal direction. In addition, as shown in FIG. 2 and FIG.
A swing block 8 is provided at the lower end of the hanger 6 via a bracket 7, and the swing block 8 supports the work supporting rod 3 rotatably around the axis of the rod itself. That is, the work support rod 3
Are supported by the work transfer means 4 and are transferred in the horizontal direction based on the operation of the work transfer means 4.

An endless chain 10 is installed in a region below the conveyor 5 on the side wall 2a,
As shown in FIG. 4, the endless chain 10 is wound around a pair of drive side and driven side sprockets 11A and 11B which are spaced apart from each other in the conveying direction of the work supporting rod 3 (left and right direction in the drawing). Has been. The endless chain 10 includes a large number of bins 10A, 10A, ... Which project laterally as shown in FIG. 5, and the row of the pins 10A arranged in parallel constitutes rack means. The work rotating means 2 includes the bottle 10A and the sprocket 3A meshing with the bottle 10A.
0 is configured. Further, as clearly shown in FIG. 4, a plurality of sets of endless chains 10 having the same aspect as described above are provided on the side wall 2a of the coating booth main body 2 along the conveying direction of the work supporting rods 3 (the left-right direction in the drawing). Between the endless chains 10 that are adjacent to each other, the connecting pins 10B and 1 fixedly mounted on the side wall 2a.
0B, ... Are arranged.

On the other hand, as shown in FIGS. 2 and 3, a swing block 8 rotatably supporting the work supporting rod 3 is provided.
Is swingably supported by the bracket 7 via support shafts 8a, 8a projecting from both side surfaces thereof, whereby the work supporting rod 3 is moved by the sprocket 3A as shown by the solid line in FIG. The pin 10A and the pin 10A mesh with each other, and the pin 10A and the sprocket 3A can oscillate freely between a rotational position where the pin 10A and the sprocket 3A are separated from each other, as shown by a chain line in FIG. That is, the bracket 7 and the swing block 8 supported by the bracket 7 constitute swing support means 30 for swingably supporting the work support rod 3.

In order to coat the work W with the above-mentioned coating apparatus 1, first, the work W is attached to the work supporting rod 3.
Set to. At this time, the work supporting rod 3 is
Due to the weight of the work W, a rotational force in the clockwise direction in FIG. 1 about the support shaft 8a acts, so that the work support rod 3 has a rotational operation position where the sprocket 3A and the pin 10A mesh with each other (see FIG. (Solid line) will be occupied.

In this state, when the transfer conveyor 5 in the work transfer means 4 is operated, the work support rod 3 moves relative to the pins 10A, 10A, ... Of the endless chain 10 and meshes with the pin 10A. The sprocket 3A is rotated and the work support rod 3 is rotated, so that the work W is rotated and transferred along the horizontal direction.

As described above, the work W conveyed while being rotated in the coating booth is painted by being sprayed with the paint from the automatic painter (not shown) (see reference numeral E in FIG. 13). Needless to say, the automatic coating machine is appropriately controlled so as to obtain an optimum finished state of the work W based on various conditions such as the shape of the work W, the moving speed, the rotation speed, and the coating color.

During the coating operation, the work W is rotated about a horizontal axis, so that the paint sprayed on the work W is evenly spread over the surface of the work W.
The occurrence of so-called flow defects can be suppressed, and a coating film having a high film thickness and smoothness can be obtained with one coating. by this,
A coating film with high reflectance and high gloss is obtained, and the finished appearance of the coating is extremely good. Further, as described above, the transfer conveyor 5 in the work transfer means 4 is located in the lateral area of the work support rod 3, so that even if iron powder, oil, or the like falls from the transfer conveyor 5, these foreign substances are Since it does not directly contact the coated surface of the work W, deterioration of coating quality can be suppressed.

By the way, when the endless chain 10 is completely stopped, the work supporting rod 3 rotates only in a fixed direction and rotates at a rotation speed proportional to the moving speed of the work supporting rod 3. However, the circulation direction and circulation speed (pin 1
It is possible to arbitrarily set the rotation direction and the rotation speed of the work supporting rod 3, that is, the work W set on the rod 3, by appropriately selecting (the moving speed of 0 A). It is possible to rotate the work W in conformity with conditions such as the shape of the work W and the type of paint. Moreover, according to the said structure, the conveyance conveyor 5
Even when the movement of the work is stopped and the horizontal movement of the work support rod 3 is stopped, it is possible to rotate the work W by operating the endless chain 10. It should be noted that the rack means of the work rotating means 20 is replaced by the pins 10A of the endless chain 10,
Needless to say, instead of 10A, ..., A rack (gear) extending linearly may be used.

On the other hand, when checking the surface state of the work W before the coating process or the finished state of the work W after the coating process during the transportation, the jig H shown in FIG. 1 is used.
Is inserted into the end portion of the work supporting rod 3, and the work W may be lifted by holding the jig H as shown by a chain line in the drawing. When the work W is lifted and the work support rod 3 is swung to the rotation stop position shown by the chain line in the figure, the pin 10A and the sprocket 3A are separated from each other, whereby the rotational driving force to the work support rod 3 is cut off. Therefore, the rotation operation of the work W is stopped, so that the worker can fully observe the work W.

After the check work is completed, the work W
Is lowered to the solid line position, the pin 10A and the sprocket 3A mesh with each other, and the work W starts rotating again. That is, according to the coating apparatus 1 described above, the rotation of the work W can be stopped at an arbitrary position in the transfer area, so that various checks on the work W can be easily performed even during the transfer.

The coating apparatus 101 shown in FIG. 6 and FIG.
A support arm 41 fixed to the lower part of the swing block 8 is provided. The support arm 41 extends toward the side wall 2a of the coating booth body 2, and a guide roller 42 is provided at its tip (left end in the figure). It is rotatably supported. Further, the support arm 41 has the work supporting rod 3 as shown by a solid line and a chain line in FIG.
Rocks with.

On the other hand, the guide roller 4 is provided on the side wall 2a.
A guide rail 43 that abuts 2 is extended in the horizontal direction, and the support arm 41 and the guide roller 4 are provided.
2 and the guide rail 43, the auxiliary supporting means 4
0 is configured. The configuration other than the auxiliary supporting means 40 is exactly the same as that of the coating apparatus 1 described above, and the operation mode is also the same. Therefore, the constituent elements having the same functions as those of the coating apparatus 1 are the same as the coating apparatus 1. The same reference numerals are given and detailed description is omitted.

According to the coating apparatus 101 having the above structure, when the work W is set on the work supporting rod 3, the work W is
The weight of the work support rod 3 causes the support rod 3 to occupy the rotational movement position indicated by the solid line, and the support arm 41 also occupies the position indicated by the solid line in FIG. Thus, during the transfer of the work W by the work transfer means 4, the work support rod 3 moves while being guided by the guide rails 43, so that the careless vibration of the work support rod 3 is generated during the transfer. As a result, the work W can be transported in a stable state, and the coating quality can be further improved.

In the coating apparatus 201 shown in FIG. 8, a free bearing 44 consisting of a ball and a holder for rotatably holding the ball is provided at the end of the work supporting rod 3 on the side where the sprocket 3A is fixed. On the other hand, on the side wall 2a, a guide rail 45 on which the balls of the free bearing 44 abut is extended along the horizontal direction, and the free bearing 44 and the guide rail 45 constitute an auxiliary supporting means 40 '. ing. Since the configuration other than the auxiliary supporting means 40 'is exactly the same as that of the coating apparatus 1 described above, the components having the same functions as those of the coating apparatus 1 are designated by the same reference numerals as those of the coating apparatus 1. Detailed description is omitted.

According to the coating apparatus 201 having the above structure, when the work supporting rod 3 is occupied by the weight of the set work W in the rotational operation position shown by the solid line, the balls of the free bearing 44 come into contact with the guide rails 45, During the transfer of the work W by the work transfer means 4, the work support rod 3 moves while being guided by the guide rails 45. As a result, like the coating apparatus 101 described above,
Unintentional vibration of the work supporting rod 3 during conveyance is prevented from occurring, and thus the work W can be conveyed in a stable state, and the coating quality can be further improved.

In the coating device 301 shown in FIGS. 9 to 12, between the work transfer means 4 and the work support rod 3,
A swing support means 50 for supporting the work support rod 3 swingably along the transfer direction of the work W by the work transfer means 4 is interposed.

As clearly shown in FIG. 10, the bracket 7 provided at the tip of the hanger 6 is rotatably supported about the vertical axis of the hanger 6, so that the work supporting rod 3 is supported by the bracket. Through the swing block 7 and the swing block 8, it is possible to freely swing about the axis of the hanger 6 as shown by the chain line in FIG.

Further, the bracket 7 is provided with a rotary side plate 51 which rotates together with the bracket 7 and is provided with a pipe 5
While being fixed via 2, the hanger 6 is
A fixed side plate 53 is fixedly provided in the upper area of the rotation side plate 51 so as to face it. A guide hole 51a is formed in the rotation side plate 51, and a lock pin 54 is inserted into the guide hole 51a so as to be movable back and forth. Further, the lock pin 54 is connected via a link arm 56 to a sleeve 55 fitted to the work supporting rod 3 so as to be rotatable and immovable in the axial direction, and is indicated by a solid line and a chain line in the figure. As shown, the work supporting rod 3 moves up and down as it swings in the up and down direction. On the other hand, as shown in FIG. 11, a central lock hole 53a is formed in the fixed side plate 53, and shift lock holes are formed at positions separated from the lock hole 53a during rotation by an appropriate central angle. 53b and 53c are formed, and the rotation side plate 51, the fixed side plate 53, the lock pin 54 and the like constitute a locking means 60 for fixing the work support rod 3 at a rotation position described later. There is. The configuration other than the swing support means 50 and the lock means 60 described above is exactly the same as that of the coating apparatus 1 described above, and the operation mode is also the same.
The components that perform the same functions as the components of the coating device 1
The same reference numerals as those of the coating device 1 are given and detailed description thereof is omitted.

When the work W is set on the work supporting rod 3, as shown in FIGS. 10 (solid line) and FIG. 11, the lock pin 54 is fitted into the central lock hole 53a of the fixed side plate 53, so that the work is The support rod 3 extends in the rotational position, that is, along the direction orthogonal to the transfer direction of the work transfer means 4, and the sprocket 3
A and the pin 10A are locked in a position where they mesh with each other. In this state, when the transfer conveyor 5 in the work transfer means 4 operates, the sprocket 3A meshing with the pin 10A rotates as described above, and thus the work W
Is transported along the horizontal direction while being rotated.

On the other hand, during conveyance, the work W is lifted by using the jig H as shown by the chain line in FIG. 9, whereby the engagement between the pin 10A and the sprocket 3A is released and the work W is released.
Is stopped, and the worker can fully observe the work W. Further, by lifting the work W, the lock pin 54 descends via the link arm 56 as shown by the chain line in FIG. 10, and the central lock hole 5 in the fixed-side plate 53.
Since the work supporting rod 3 is unlocked, the work supporting rod 3 can be freely swung around the vertical axis, and the work W can be sufficiently observed from various angles.

Here, in the coating device 301, when the work supporting rod 3 is to be swung about the vertical axis,
In order to unlock the work support rod 3, it is necessary to swing the work support rod 3 once in the vertical direction. This operation causes the pin 10A and the sprocket 3A to swing.
Since the engagement with and is released and the rotational drive force to the work W is completely cut off, it is extremely effective as a safety mechanism.

After the check work for the work W is completed, the lock pin 54 is fitted into the central lock hole 53a of the fixed side plate 53 and locked at the work support rod 3 rotation position, whereby the work W is rotated again. Start. Further, by fitting the lock pin 54 into the shift lock hole 53b or 53c of the fixed side plate 53, the work supporting rod 3 is moved in the transfer direction as shown by the three-dot chain line or two-dot chain line in FIG. It is also possible to lock the work supporting rod 3 in a tilted manner and rotate the work supporting rod 3 in this state. Further, the lock pin 54 is attached to the shift lock hole 53b or 53
If the positional relationship between the sprocket 3A and the pin 10A is set in advance so that the sprocket 3A is separated from the pin 10A when it is fitted to the pin c, and a means for holding the work supporting rod 3 horizontally is provided, Is transported while being supported by the work supporting rod 3 without rotating, so that the worker can carry out the work of observing the work W without holding the work W in his hand.

In each of the above-mentioned embodiments, the coating device for coating the fuel tank of the motorcycle is shown. However, the coating device according to the present invention is widely applied to the device for coating various articles. Not to mention getting it.

[0031]

As described above in detail, in the coating apparatus according to the present invention, the work supporting rod that holds the object to be coated is extended in the horizontal direction, and the work supporting rod is rotatable about the axis. Work transfer means supported on the work support and moved in a predetermined direction is provided on the apparatus base in such a manner as to occupy the lateral region of the work support rod, and further provided on the rack means and the work support rod provided on the apparatus base. A work rotating means for driving and rotating the work supporting rod around an axis is provided, which is composed of a pinion means, and is configured to rotate the object to be coated. According to the above configuration, by arranging the work transfer means in the lateral region of the work support rod, it is possible to prevent the oil or the like dropped from the work transfer means from being applied to the object to be coated, and the object to be coated can be prevented. By rotating around the horizontal axis, a smooth coating film can be obtained over the entire object to be coated, so that it becomes possible to significantly improve the coating quality of the object to be coated. Further, in the coating apparatus according to the present invention, the work supporting rod is swingably supported between the work conveying means and the work supporting rod in a direction in which the rack means and the pinion means can be engaged and disengaged from each other. A swing support means is provided. According to the above configuration, the work supporting rod is rocked through the rocking supporting means, and the rack means and the pinion means constituting the work rotating means are separated from each other, whereby the rotation operation of the work can be arbitrarily stopped. As a result, it is possible to easily confirm the coating status of the object being coated during transportation.

[Brief description of drawings]

FIG. 1 is an overall side view conceptually showing a coating apparatus according to the present invention.

FIG. 2 is a cross-sectional side view of essential parts showing a swing support means in the coating apparatus.

FIG. 3 is a cross-sectional front view of essential parts showing a swing support means in the coating apparatus.

FIG. 4 is an overall front view conceptually showing a coating device.

FIG. 5 is a perspective view of essential parts showing a work rotating means in the coating apparatus.

FIG. 6 is a sectional side view conceptually showing a coating apparatus according to the present invention.

FIG. 7 is a cross-sectional side view of essential parts showing swing support means and auxiliary support means in the coating apparatus.

FIG. 8 is a sectional side view conceptually showing the coating apparatus according to the present invention.

FIG. 9 is a sectional side view conceptually showing a coating apparatus according to the present invention.

FIG. 10 is a cross-sectional side view of essential parts showing the periphery of the swing support means and the swing support means in the coating apparatus.

11 is a cross-sectional view taken along the line AA of FIG.

12 is a sectional view taken along line BB of FIG.

FIG. 13 is a conceptual cross-sectional view showing a conventional coating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Coating device, 2 ... Coating booth main body (apparatus base), 3 ... Work support rod, 4 ... Work transfer means, 3A ... Sprocket (pinion means), 7 ... Bracket, 8 ... Swing block, 10 ... Endless chain, 10A ... pin (rack means), 20 ... work rotating means, 30 ... swing support means, 40, 40 '... auxiliary support means, 50 ... swing support means, 60 ... locking means, W ... coated object (work).

Claims (3)

[Claims] 1. A work supporting rod that extends in the horizontal direction and holds an object to be coated, and a work supporting rod that is provided in a device base in a manner to occupy a lateral region of the work supporting rod. Work transfer means for rotatably supporting the work support rod about its axis and moving the work support rod along a predetermined direction to transfer the work; rack means provided on the apparatus base; A pinion means provided on the work support rod and meshing with the rack means, and a work rotating means for driving and rotating the work support rod around an axis based on relative movement between the rack means and the pinion means; It is provided between the work conveying means and the work supporting rod, and the rack supporting means and the pinion means engage with each other with respect to the work supporting rod. A swinging support means for swingably supporting along a direction in which they can be engaged and disengaged, and a coating apparatus. 2. A work supporting rod that extends in the horizontal direction and holds an object to be coated, and a work supporting rod that is provided on the apparatus base body in a manner to occupy a lateral region of the work supporting rod. Work transfer means for rotatably supporting the work support rod about its axis and moving the work support rod along a predetermined direction to transfer the work; rack means provided on the apparatus base; A pinion means provided on the work support rod and meshing with the rack means, and a work rotating means for driving and rotating the work support rod around an axis based on relative movement between the rack means and the pinion means; It is provided between the work conveying means and the work supporting rod, and the rack supporting means and the pinion means engage with each other with respect to the work supporting rod. When the swing support means that swingably supports along the direction in which they can be engaged and disengaged and the work support rod are provided, and the rack means and the pinion means mesh with each other, they contact the device base body. A coating apparatus comprising: an auxiliary supporting unit for supporting the weight of the work held by the work supporting rod. 3. A work supporting rod extending in the horizontal direction for holding an object to be coated, and a work supporting rod provided on the apparatus base in such a manner as to occupy a lateral region of the work supporting rod. Work transfer means for rotatably supporting the work support rod about its axis and moving the work support rod along a predetermined direction to transfer the work; rack means provided on the apparatus base; A pinion means provided on the work support rod and meshing with the rack means, and a work rotating means for driving and rotating the work support rod around an axis based on relative movement between the rack means and the pinion means; It is provided between the work conveying means and the work supporting rod, and the rack supporting means and the pinion means engage with each other with respect to the work supporting rod. It is provided between a swing support means that swingably supports along a direction in which the work can be detached, and between the work transfer means and the work support rod, and the work support rod is moved in the transfer direction by the work transfer means. Is provided between the work supporting means swingably supported along the work conveying means and the work supporting rod, and the work supporting rod is placed at a rotational position where the rack means and the pinion means mesh with each other. A coating device comprising: locking means for fixing;