JPS591901B2 - Spray gun moving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spray gun moving device, and an object of the present invention is to provide a spray gun moving device that can smoothly reciprocate a spray gun.

2. Description of the Related Art As a conventional spray gun moving device, an electric reciprocator for painting as shown in FIG. 1 has been known. This consists of a pair of sprocket wheels 1 and 2 arranged at a predetermined distance.
A rectangular frame-shaped moving body 4 with an endless chain 3 rotatably stretched between them and a spray gun (not shown) attached thereto.
By fixing to a part of the chain 3 a flange 5 attached to the inside thereof so as to be linearly movable in the direction of arrow AB, the movable body 4 is attached to the chain 3 via the flange 5.
By rotating one sprocket wheel 1 with an electric motor 6 and rotating the chain 3 in one direction, the movable body 4 is reciprocated in the direction of arrow CD along guide rails T and 8. It was constructed so that it could be moved. The flange 5 is provided inside the movable body 4 so as to be linearly movable in the direction of arrow AB in order to allow displacement of the flange 5 in the sprocket wheels 1 and 2 as the chain 3 rotates. However, in such a configuration, the assembly structure of the flange 5 into the movable body 4 is complicated, the weight is large, and the flange 5 is
Since the movable body 4 moves linearly in a direction perpendicular to the direction of movement of the movable body 4, the impact at the turning point during the reciprocating movement of the movable body 4 is large, resulting in problems such as not being able to operate smoothly and causing uneven spraying.

The present invention eliminates the above-mentioned drawbacks, and each embodiment thereof will be described below with reference to FIGS. 2 to 12.

FIG. 2 is a partially cutaway side view of the first embodiment of the spray gun moving device according to the present invention, FIG. 3 is a cross-sectional plan view taken along line - in FIG. 2, and FIG. 4 is a - in FIG. 2. A line arrow view is shown. In each figure,
10 and 11 are sprocket wheels (rotating bodies) arranged vertically at a predetermined interval so as to be freely rotatable, and the upper sprocket wheel 10 is pivotally supported by a support arm 13 hanging from a ceiling surface 12 ing. Note that this support arm 13
serves to apply tension to a chain (endless band) 18, which will be described later. The lower sprocket wheel 11 is connected to an electric motor 17 via a speed reduction mechanism 15 and a speed change mechanism 16 which are installed and fixed on a floor surface 14 in this order. An endless chain 18 is rotatably stretched between the sprocket wheels 10, 11. A movable body 20 is connected and fixed to a part of the chain 18 via a connecting mechanism 19. Is the connecting mechanism 19 protected by the boss 21? It has a pin 22 and a rotating disk 23. One end of the pin 22 is fixed to a part of the chain 18, and the other end is fixed to an eccentric portion on the outer peripheral side of one side of the rotating disk 23. Is the rotating disk 23 protruding from the center of the other side? By rotatably supporting the rotating shaft 24 provided on the outer peripheral surface of the moving body 20, the moving body 2
It is rotatably attached with respect to 0. As shown in FIG. 4, the rotation center points of the rotating disk 23 and the sprocket wheels 10, 11 are located corresponding to the longitudinal center line l (shown in FIG. 4) of the endless body 18. . The movable body 20 has a cylindrical shape, and a thrust bearing 27 is attached to the outer periphery of a single guide pole 26 installed between the ceiling surface 12 and the floor surface 14 parallel to the center line l. It is fitted so as to be slidable in its axial direction via the . In addition, the mobile object 20 is a key? Due to engagement with one groove, rotation in the circumferential direction of the guide pole 26 is impossible. The movable body 2P reciprocates along the guide pole 26 by rotating the chain 18 in one direction.

A spray gun 28 is attached to the outer surface of the movable body 20 at a position opposite to the coupling mechanism 19.

Next, the operation of the spray gun moving device of the present invention having the above structure will be explained.

From the state shown in the figure, the electric motor 17 connects the sprocket wheel 1.
When 0 and 11 are rotated in the direction of the arrow and the chain 18 is rotated in the direction of the arrow, the pin 22 of the coupling mechanism 19 rises as the chain 18 rotates. The moving body 20 rises through the movement. When the chain 18 continues to rotate in the direction of the arrow after the pin 22 reaches point A in FIG. Displaced from to point B.

As the pin 22 is displaced from point A to point B, the rotating disk 23 rotates clockwise in FIG. 4 about the shaft 24.
When the chain 18 further rotates in the direction of the arrow after the pin 22 reaches point B, the pin 22 descends as the chain 18 rotates, and the rotating disk 23 is moved together with the pin 22.
The moving body 20 descends through the.

When the chain 18 rotates in the direction of the arrow after the pin 22 reaches point C in FIG. Displaced from point C to point D. As the pin 22 is displaced from point C to point D, the rotating disk 23 rotates clockwise in FIG. 4 about the shaft 24.

After the pin 22 reaches point D, the chain 1
8 rotates in the direction of the arrow, the pin 22 rises, and the movable body 20 rises together with this pin 22 via the rotating disk 23.

By repeating the above operations, the movable body 20 reciprocates linearly along the guide pole 26 in the direction of the arrow in FIG.

However, during the reciprocating movement of the movable body 20, the displacements of the pin 22 at the turning point from point A to point B and from point C to point D are smoothly permitted by the rotation of the rotary disk 23, resulting in even spraying. It can be performed well.

In addition, in the above embodiment, by using a single guide pole for the movable body, problems such as the need to ensure parallelism and increase in weight when two guide rails are provided as in the past are solved. It is possible.

As described above, according to the spray gun moving device of the present invention, the rotating disk is displaced in the linear direction via the moving body and regulated by the guide pole, so that its linear movement is extremely stable. Since the rotating disk rotates with its center of rotation remaining concentric with the rotating body and causes the pin member to run in the circumferential direction, the running of the pin member is also stable. The direction can be reversed extremely smoothly, the impact at the turning point is reduced, and the durability of each part is improved, and the moving body itself is guided by guide poles, eliminating unnecessary movements other than traveling in a constant straight line. Since the spray gun can run stably, it has the advantage of being able to perform spray operations extremely stably and with high efficiency using a spray gun.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a conventional spray gun moving device, and FIG. 2 is a side view showing an example of a spray gun moving device according to the present invention.
A partially cutaway side view of the embodiment, FIG. 3 is a cross-sectional plan view taken along the - line in FIG. 2, and FIG. 4 is a view taken along the - line in FIG. 2. 10, 11... Sprocket wheel (rotating body), 17... Electric motor, 18... Chain (endless band), 19, 20... Moving body , 21...
...Boss, 22...Pin, 23...
・Rotating disk, 24...Rotating shaft, 25...
・Bearing part, 26...Guide pole, 27...
...Bearing, 28...Spray gun.

Claims (1)

[Claims] 1. An endless body 18 stretched between a pair of rotating bodies 1011 spaced apart from each other and rotating in one direction, and a guide pole 26 fixed in parallel to the longitudinal center line l of the endless body.
a spray gun moving body 20 having a spray gun 28, which is slidably guided and fitted to the guide pole and capable of linearly sliding while keeping its circumferential position fixed relative to the guide pole; a rotating disk 23 rotatably supported at a position corresponding to the longitudinal center line of the endless body;
It consists of a pin member 22 that connects the eccentric position of the rotating disk and a predetermined portion of the endless body, and when the pin member runs linearly, the rotating disk does not rotate itself but is attached to the above-mentioned one together with the moving body. When the pin member 22 travels in the circumferential direction around the outer periphery of one of the rotating bodies 10 and 11, the rotating disk 23 maintains its center of rotation concentric with the rotating body 180. A spray gun moving device characterized in that it is configured to reverse the running direction of the movable body 20 by rotating the spray gun 20 and move the spray gun back and forth on a fixed straight line to perform spraying.