JPS6365976A - Automatic painting apparatus - Google Patents

Abstract

PURPOSE:To efficiently paint an article to be painted having a different shape, by automatically setting the over-spray distance of a spray gun corresponding to the magnitude of the depth and width dimension of the peripheral edge side surface of the surface opposed to the spray gun of the article to be painted. CONSTITUTION:A control apparatus 6 reads the shape data of an article (a) to be painted from a shift register 11 and, at the same time, reads the data corresponding to the article (a) to be painted from each shift register 15 and selects the set values of three kinds of over-spray distances preset corresponding to the combinations of said data. In this case, the set values are made large, medium and small on the basis of the presence of the reception of light due to light receivers 13a, 13b and a spray gun 4 performed over-spray to the outside of the peripheral edge of the article (a) to be painted by the distances X-Z corresponding to the set values. As a result, regardless of the magnitude of the depth and width dimension of the side surface of the article (a) to be painted, painting can be applied to the article (a) to be painted up to the side surfaces thereof without wasting paint.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic painting device that automatically sprays paint onto objects to be painted that are conveyed by a conveyor using a spray gun.

Conventional Technology and Problems to be Solved by the Invention Generally, such automatic coating equipment is a reciprocating machine in which a support bar is reciprocated in the vertical direction near the coating position of a conveyor that conveys the object to be coated in a substantially horizontal direction. A spray gun that sprays paint toward the object to be painted is attached to its support bar, and the object to be painted passes in front of the spray gun. The paint is applied automatically by spraying the paint. By the way, if the object to be painted has a side surface on the periphery of the surface facing the spray gun, such as when the object is box-shaped, the spray gun By correcting the planar shape data of the object to be painted so as to overspray by a predetermined distance outside the periphery, it is possible to apply paint to the side surfaces of the object. In this case, the work efficiency was low because the operator manually corrected the planar shape data according to the object to be painted, and when objects to be painted with different shapes were randomly flowed on the painting line, this was difficult. It was impossible to deal with it.

Means for Solving the Problems The present invention, as a means for solving the above-mentioned problems, detects the depth and width of the side surface of the peripheral edge of the surface facing the spray gun of the object to be painted before the coating position of the conveyor. At the same time, a control device is provided that corrects the data of the planar shape of the object to be painted according to the magnitude of the detected value of the sensor, and the spray gun adjusts the shape of the object to be painted based on the correction data from the control device. It was designed to overspray on the outside of the periphery.

Function and effect of the invention This is because the automatic painting apparatus of the present invention has the above configuration.

The overspray distance from the periphery of the object to be painted is automatically set according to the depth and width of the side surface of the periphery of the surface facing the spray gun, and the appropriate amount of paint is applied to that side surface. This is because the overspray distance for each object to be painted is automatically set for each object to be painted.

This has the effect of improving work efficiency and being able to cope with cases where objects to be coated with different shapes are flowed randomly.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, l is a conveyor that suspends and conveys the object a to be coated in the horizontal direction, and this conveyor 1
A reciprocator 2 is disposed near the painting position ff1A, and this reciprocator 2 has a support bar 3 protruding from its side surface that reciprocates in the downward direction. A spray gun 4 is attached to the spray gun 3 that sprays paint toward the object a passing in front of it, and an on-off valve 5 connected to a paint pressure source is connected to the paint supply port. is connected to a control device fi6 that sends out opening/closing signals, and on the other hand, a gate-shaped frame 7 is disposed in front of the coating position A of the conveyor 1 and straddles above the conveyor 1. 8.
Detectors 10 and 10 for detecting the planar shape of the surface of the object a facing the spray gun 4 are attached inside each of the detectors 8 and 8, and each detector 10 is connected to the control device 6 via a shift register 11. The data on the planar shape of the object a to be painted obtained by each detector 10 is sequentially sent to the shift register 11 and temporarily stored, and the object a to be painted is connected to the spray gun. 4, the control device 6 reads the planar shape data corresponding to the object a from the shift register 11, and sends an opening/closing signal to the on-off valve 5 based on the data, so that the spray gun 4 is in front of the object a. The paint is sprayed out according to the shape of the front surface of the object to be painted a, and two projectors 1 are installed on the lower surface of the upper plate of the gate-shaped frame 7 to project light downward.
2a and 12b are installed at intervals near the center and on the outside thereof, and light receivers 13a and 13b that receive light from each of the projectors 12a and 12b, respectively, are provided opposite to each other on the floor. , 13b are connected to respective shift registers 15 that store data on the presence or absence of light reception, and the shift registers 15 are connected to the control device 6, and the control device 6 stores data on the shape of the object a to be painted. is read out from the shift register 11, data corresponding to the object to be coated a is read out from each shift register 15 at the same time, and three types of overspray preset according to the combination of data are read out from each shift register 15. As shown in Fig. 3, when the light receiver 13b is not receiving light, the setting value is "large", and when the light receiver 13a is receiving light, the setting value is set to "large". When the light receivers 13b and 13a are not receiving light, select the setting value "Medium", and when both the receivers 13b and 13a are receiving light, select the setting value "Small". The data of the shape of a is corrected.

As shown in FIGS. 1 and 2, the object to be coated a is box-shaped and has a small width on its side surfaces, and when passing inside the gate-shaped frame 7, both of the projectors 12a and 12b are exposed. If the light receivers 13a and 1 do not block the light of
3b both receive light, so when the object to be painted a approaches the front of the spray gun 4, the control bag @6 selects the overspray distance "small" as described above and reads it out from the shift register 11. By correcting the shape data of the object a, the spray gun 4 oversprays the outside of the front periphery of the object a by a distance X corresponding to the set value, and the object a is When it has a side width that blocks only the light from the inner floodlight 12a.

Since only the light receiver 13b receives the light, the control device 6 selects the "medium" overspray distance m as described above, and thereby the spray gun 4 sprays the spray gun 4 on the outside of the periphery of the object to be painted, corresponding to the set value. The object to be coated a is oversprayed by a distance Y, and furthermore, the object to be coated is
If the side surface width is large enough to block the light of As a result, the spray gun 4 moves to the outside of the periphery of the object to be painted a distance 2 corresponding to the set value.
In this way, the optimal overspray distance is set according to the depth dimension of the side surface of the object to be painted, so regardless of the size of the depth width of the side surface. The paint can be sufficiently applied to the side surface without wasting the paint.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, FIG. 2 is a side view showing the attachment relationship between a projector and a receiver, and FIG. 3 is a flowchart showing a means for correcting data on the shape of an object to be painted. . a: Object to be painted A: Paint shield 1: Conveyor 2 locator 3: Support bar 4 = Spray gun, 6: Control device 12a, 12b: Emitter 13a, 13b = Receiver

Claims (1)

[Claims] An elevating drive device in which a support member is reciprocated in the vertical direction is disposed near the coating position of a conveyor that conveys the object to be coated in a substantially horizontal direction, and paint is ejected onto the support member toward the object to be coated. In an automatic painting device, a spray gun is attached and paint is sprayed onto the object to be painted passing in front of the spray gun based on data of a planar shape of the object detected in advance. A sensor is disposed in front of the position to detect the depth and width of the side surface of the peripheral edge of the surface facing the spray gun of the object to be painted, and the planar shape is adjusted according to the magnitude of the detected value of the sensor. An automatic painting apparatus characterized in that a control device is provided for correcting the data, and the spray gun is configured to overspray to the outside of the periphery of the object to be painted based on the correction data by the control device.