JPS594773Y2 - Painter spray gun attitude control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spray gun attitude control device for a coating machine, which allows paint to be sprayed from different angles by changing the attitude of the spray gun relative to the object to be coated.

In conventional automatic painting equipment, the spray gun is fixed to a stand, so the spray angle of the paint to the object to be coated is constant, and if the painted surface of the object is curved, it is sprayed over the entire surface. The drawback was that a uniform coating film could not be formed.

The object of the present invention is to provide a spray gun attitude control device with a novel structure that eliminates such drawbacks.

Hereinafter, one embodiment of the present invention will be described in detail based on the accompanying drawings.

In Figure 1, 1 is a conveyor that suspends and conveys the vOa to be coated in the horizontal direction, 2 is a base that is hemmed at right angles to the conveyance direction of the conveyor 1, and 3 is movable back and forth on the base 2. The main body is placed in the main body 3, and inside the main body 3 is a reducer 5
An endless chain 8 that circulates up and down is passed between a lower sprocket 6 and an upper sprocket 7 that are driven by a motor 4 via a motor 4.
An elevating table 9 connected to the main body 1 reciprocates up and down on the front surface of the main body 1, and a pedestal 10 is fixed to the front surface thereof.

As shown in detail in FIGS. 2 and 3, on the front surface of the pedestal 10, a mounting plate 11 and a supporting arm 16 are protruded at intervals vertically and horizontally. As shown in Figure 6, there are three sets of mounting holes 11a and 11b, each consisting of four holes.
, 11C are transparently provided.

Reference numeral 12 denotes an actuator whose output shaft 13 reversibly rotates by about 90 degrees by driving with hydraulic pressure, pneumatic pressure, magnetic force, etc., and includes an arbitrary set of mounting holes 11 a and 11 b.
, 11 By passing the C Niholt 14, the fourth to sixth
As shown in the figure, they are fixed to the mounting plate 11 at different angles.

A drive link 15 is attached to the output shaft 13 of the actuator 12.
The base end of a driven link 17 is fixed to the support arm 16, and the base end of a driven link 17 is pivotally supported by a pin 18, and a bracket 19 is attached to a pin 20.2 at the tip of both links 15.17.
A four-bar linkage mechanism A is constituted, in which both links 15 and 17 swing.

Both links 15.17 are of equal length, but the pin 20.
21 is smaller than the distance between the output shaft 13 and the pin 18 at the proximal end, the four-bar link mechanism A has a substantially trapezoidal shape.

A mounting rod 23 is fixed to the bracket 19, to which a spray gun 24 can be mounted at any angle.

As shown in FIG. 4, when using the apparatus of this embodiment to coat a workpiece a1 having a protrusion protruding diagonally upward on the front surface, the actuator 12 is installed transparently at the base of the mounting plate 11. When the bolts 14 are passed through one set of mounting holes 11a and fixed, when the output shaft 13 rotates clockwise in the figure, the four-bar link mechanism A swings downward as shown by the solid line in the figure, and the spray gun 24 is oriented horizontally, and conversely, when the output shaft 13 rotates counterclockwise, the four-bar linkage mechanism A swings diagonally upward, as shown by the chain line in the figure, and the spray gun 24 rotates diagonally downward. To be oriented.

For this reason, if the four-bar linkage mechanism A is in the state shown by the solid line in the diagram during the upward stroke of the gantry 10, and then switched to the state shown by the chain line in the figure in the downward stroke to inject paint, the paint will be uniformly applied over the entire front surface of the object to be coated a1. Can be sprayed.

In addition, as shown in FIG. 5, when painting a workpiece a2 having a protrusion C projecting diagonally downward on the front surface, the actuator 12 is attached to a pair of mounting holes transparently provided at the tip of the mounting plate 11. 11C, the output shaft 13 of the actuator 12 can be rotated by 90 degrees.

Since the ray gun 24 moves by changing its posture to the two positions shown by the solid line and the chain line in the figure, if the spray gun 24 is held in the position shown by the solid line during the upward stroke of the gantry 10 and the position shown by the chain line during the downward stroke, the object to be coated can be coated. The entire front surface of a2 can be painted uniformly.

Furthermore, as shown in FIG. 6, when painting a workpiece a3 whose front surface has a horizontal protrusion d, the actuator 12 is attached to a set of mounting plates transparently installed in the center of the mounting plate 11. Hole 1
It is best to fix it using 1b.

In addition, in this embodiment, as described above, not only the posture of the four-bar linkage mechanism A is switched between the upward stroke and the downward stroke of the spray gun 24, but also when two spray guns 24 on the left and right are installed on the pedestal 10, Alternatively, the left and right spray guns 24 may be fixed in arbitrarily determined different postures by swinging the four-bar linkage mechanism A to paint the object a.

Further, in the above embodiment, an actuator with a rotating output shaft was used as an actuator for swinging the four-bar link mechanism, but an actuator whose output shaft expands and contracts is used to rotate either one of the output shafts. Alternatively, it may be pivoted on a bracket.

As clarified by the above explanation, the spray gun attitude control device of the present invention pivots the base ends of two links of approximately equal length on the pedestal, and the tips of the two links are spaced at a distance narrower than the distance between the base ends. A four-bar link mechanism is pivotally supported on a bracket to form a substantially trapezoidal shape, a spray gun is attached to the bracket, and an actuator for swinging the four-bar link mechanism is attached to the pedestal. When the four-bar link mechanism swings due to the drive of the actuator, the bracket swings in the opposite direction to the swing direction of the link. The distance between the coating materials can be kept constant, and even if the surface to be coated is curved, it can be coated uniformly.

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention, with Fig. 1 being a side view showing the outline, Fig. 2 being an enlarged plan view of the main parts, Fig. 3 being a front view of the same, and Figs. 4 to 6 showing the operation. FIG. 3 is an enlarged side view of main parts. 1: Conveyor, a, a l, a 2. a3: object to be coated,
10: Frame, 12: Actuator, 13: Output shaft, 1
5, 17: Link, 19 Nibracket, 24 Nispray Gun, A: Four-bar link mechanism.

Claims (1)

[Scope of utility model registration request] The base ends of two links of approximately equal length are pivotally supported on a frame, and the tips of both links are pivotally supported on a bracket at an interval narrower than the interval between the base ends, thereby constructing a four-bar link mechanism forming a substantially trapezoidal shape. A spray gun attitude control device for a coating machine, characterized in that a spray gun is attached to the bracket, and an actuator for swinging the four-bar linkage mechanism is attached to the pedestal.