JPS6231172Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coating machine, and particularly to a coating machine suitable for coating the upper surface of the roof of an automobile body.

As a coating machine for painting the upper surface of the roof of an automobile body, there is conventionally a horizontal reciprocating coating machine with a spray gun that can be tilted in the vertical direction. In this paint sprayer, the gun mounting slider is attached to the lifting rail bridged in the middle of the gate-shaped frame so that it can move laterally, and the spray gun and the spray gun can be tilted vertically to the gun mounting slider. A tilt cylinder is assembled therein, and the lift rail and the gun mounting slider are configured to be driven by a drive device disposed above the lift rail. by the way,
Since the drive device is a chain type, it is tall in itself, and the gate-shaped frame becomes tall not only due to the height of the workpiece but also to the height of the drive device, which not only makes the entire painting machine large-scale, but also increases the height of the drive device. The gun mounting slider is large because it supports not only the spray gun but also the tilt cylinder, and this also forces the size of the drive device and the coating machine to be large.
Such a large painting machine requires a large booth, making installation space a problem.

This invention was developed in consideration of the actual situation.
The purpose is to provide a compact paint sprayer that does not use a chain drive. In order to achieve such an object, the present invention includes an arm stay that is attached to a gate-shaped frame so as to be able to swing vertically via a support shaft, and that is moved up and down by an elevating cylinder; an arm which is rotatably connected to a shaft at its base end, whose intermediate portion is supported so as to be movable in the lateral direction on the arm, and which is swung left and right by an arm drive cylinder assembled to the arm stay; a gun bracket attached to the tip so as to be tiltable in the vertical direction and supporting the spray gun at the tilting end; a tilt device attached to the portal frame and connected to the gun bracket via a link to tilt the gun bracket; The configuration includes:

In the coating machine according to the present invention having the above configuration, the spray gun can be raised and lowered by swinging the arm stay by the lifting cylinder, and the spray gun can be moved laterally by stirring the arm by the arm driving cylinder. Therefore, the height of the gate-shaped frame can be kept low according to the height of the workpiece, and the size of the coating machine can be reduced. In addition, only the spray gun is attached to the gun bracket attached to the end of the arm.
The tilt device, which tilts the spray gun vertically via a link, is assembled to the gate-shaped frame, so the configuration of the arm, gun bracket, etc. is simple, and it also has the advantage of being lightweight because it does not support heavy objects. This also makes it possible to reduce the size and weight of the coating machine. Therefore, the coating machine is compact and can be easily installed even in a booth with a small installation space.

An embodiment of the present invention will be described below based on the drawings. FIG. 1 shows a coating machine according to the present invention, which is used to automatically coat the roof of a light bus. In the coating machine, a portal frame 10 is installed in a booth (not shown), straddling a conveyor (not shown) that conveys a light bus, and an arm stay 14 is attached to a support shaft 12.
is assembled so that it can swing vertically. The arm stay 14 has a U-shape when viewed from above, and is configured to be moved up and down by a pair of left and right lifting cylinders 16, 16 whose bases are pivotally connected to the portal frame 10. An arm drive cylinder 18 is attached to the arm stay 14, and a pair of left and right arms 20, 2 extending along the conveyor.
0 intermediate portions are each supported so as to be movable in the lateral direction. Each arm 20 is rotatably connected to the support shaft 12 via a bracket 22 at its base end 20a, and is also connected to each other by a connecting rod 24, and can be moved left and right by an arm drive cylinder 18. It is configured to be instigated. Further, an L-shaped gun bracket 26 is attached to the tip 20b of each arm 20 so as to be tiltable in the vertical direction. Each gun bracket 26 supports a spray gun 28 at its forward tilting end 26a and is connected to a tilting device A via a link 30 at its upper tilting end 26b.

The tilt device A is for vertically tilting the spray guns 28, 28 via the links 30, 30, and is fixed to the top surface of the beam of the portal frame 10, as shown enlarged in FIG. Board 3
2. A pair of tilt cylinders 34 and 36 assembled to this base plate 32 and a shaft 3 that connects them.
8, a pair of arms 40, 42, and a portal frame 10
Brackets 44, 44 (first
shaft 46 and arm 48 assembled to
50, 50, etc. The tilt cylinder 34 is pivotally attached to the base plate 32 at its base end 34a, and is connected to the arm 4 at its rod tip 34b.
It is pivotally attached to the rotating end 40a of 0. On the other hand, the tilt cylinder 36 has an arm 4 at its base end 36a.
The rod end 36b of the arm 48 is pivotally connected to the rotary end 42a of the arm 48. The shaft 38 is rotatably assembled to the base plate 32, and both arms 40, 4 are mounted on the shaft 38.
2 is assembled to rotate integrally with the shaft 38 at its respective base end portions 40b, 42b so as to be able to transmit torque. On the other hand, the shaft 46 is rotatably assembled to brackets 44, 44, and arms 48, 50, 50 are mounted on the shaft 46.
Each base end 48b, 5 rotates integrally with the
0b and 50b are assembled so that torque can be transmitted. Further, a base end 30a of each link 30 is connected to a rotating end 50a of each arm 50, respectively.

In FIG. 1, reference numeral 52 indicates a rotation angle detection dog of the support shaft 10, and reference numeral 54 indicates a limiter box for detecting the movement of the arm 20.

In the coating machine configured as described above, when the light bus W is transported to a predetermined carry-in position, the limiter switch (not shown) installed in the booth confirms the light bus W, and the conveyor drive unit ( A controller (not shown) counts the pulse signals from the controller (not shown). When this count reaches each set value, the following operations occur.

(1) When the count reaches the first set value, the lifting cylinders 16, 16 operate and the arm stay 14
is lowered to the set height, and at the same time the tilt cylinder 36 is operated and the spray guns 28, 28 are moved to the second position.
It tilts in the A direction in Figures and Figure 4. Incidentally, the tilting of the spray guns 28, 28 in the A direction is achieved by the movement of each member, as indicated by the solid line arrows in FIG.

(2) When the count reaches the second set value, the roof front part Wa of the light bus W approaches the spray guns 28, 28, and the arm drive cylinder 18
reciprocates, the arms 20, 20 are fanned as shown in FIG. 3, and at the same time, paint is ejected from the spray guns 28, 28 to start painting.

(3) When the count reaches the third set value, the roof top part Wb of the light bath W will close to the spray gun 2.
When the tilt cylinder 36 returns, the spray guns 28, 28 return to the neutral position as shown in FIGS. 1 and 2. At this time as well, fanning and painting of the arms 20, 20 continues.

(4) When the count reaches the fourth set value, the roof rear part Wc of the light bath W is activated by the spray gun 2.
8, 28, and the tilt cylinder 34
is activated, and the spray guns 28, 28 are tilted in the direction B in FIGS. 2 and 4. Incidentally, the tilting of the spray guns 28, 28 in the direction A is achieved by the movement of each member, as indicated by the dashed line arrows in FIG. At this time, of course, the fanning and painting of the arms 20, 20 continues.

(5) When the count reaches the 5th set value, the roof rear part Wc of the light bath W is activated by the spray gun 2.
8, 28, the spraying of paint stops, the tilt cylinder 34 returns and the spray guns 28, 28 return to the neutral position, and the arm drive cylinder 18 stops and the lifting cylinders 16, 16 return to their original positions. The coating machine then returned to its original position.

By the way, in this painting machine, the spray guns 28, 28 can be raised and lowered by swinging the arm stay 14 by the lifting cylinders 16, 16, and the left and right movement of the spray guns 28, 28 can be performed by the arm drive cylinder 18. Arm 20,20 by
Since the height of the gate-shaped frame 10 can be kept low according to the height of the light bath W, the size of the painting machine can be reduced. In addition, the tip 2 of each arm 20
Only the spray gun 28 is attached to the gun bracket 26 attached to the gun bracket 26, and the tilt device A that tilts the spray gun 28 in the vertical direction via the link 30 is attached to the portal frame 10.
The structure of the arm 20, gun bracket 26, etc. is simple, and since it does not support heavy objects, it has the advantage of being lightweight, and this also allows the paint sprayer to be made smaller and lighter. Note that in implementing the present invention, the number of arms 20, spray guns 28, etc. can be changed as appropriate.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a coating machine according to the present invention, Fig. 2 is an enlarged perspective view of the same part, Figs.
The figure is an explanatory diagram of the same operation. Explanation of symbols, 10... Gate-shaped frame, 12...
Support shaft, 14... Arm stay, 16... Lifting cylinder, 18... Arm drive cylinder, 20...
Arm, 26...gun bracket, 28...spray gun, 30...link, A...tilt device.

Claims (1)

[Scope of utility model registration request] An arm stay is attached to a gate-shaped frame so as to be swingable in the vertical direction via a support shaft, and is moved up and down by an elevating cylinder; An arm that is supported so as to be movable in the lateral direction on the arm stay and can be swayed from side to side by an arm drive cylinder that is attached to the arm stay.The arm is attached to the tip of this arm so that it can be tilted in the vertical direction, and the tilting end is used to spray. A coating machine comprising a gun bracket for supporting a gun, and a tilting device assembled to the portal frame and connected to the gun bracket via a link to tilt the gun bracket.