JPS6365974A - Automatic painting apparatus - Google Patents

Abstract

PURPOSE:To obtain the shape data of both surfaces of an article to be painted by one detector and to reduce installation cost, by detecting the plane shape only of one surface of the article to be painted and reversing this shape data by a control apparatus to obtain the shape data of the other surface of the article to be painted. CONSTITUTION:An article (a) to be painted passes in front of a detector 8 and the plane shape of the surface of the article (a) is detected. The opening and closing of an opening and closing valve 5 is controlled on the basis of the shape data corresponding to the shape of the surface at the position of a right-hand spray gun 4 and paint is sprayed to the article (a) to be painted in matching relation to the plane shape of the surface by the spray gun 4. Next, the article (a) to be painted is rotated by 180 deg. around a vertical axis by a reversal apparatus 7 and reversed so as to be turned over and, at the position of a left-hand spray gun 4, the opening and closing of the opening and closing valve 5 is controlled based on the shape data of the back side of the article (a) to be painted obtained through a control apparatus 6 to apply the paint to the back side of the article (a) to be painted by the spray gun 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention involves spraying paint onto one side of each object to be coated conveyed by a conveyor using a spray gun, then turning the object over and spraying the other side with another spray gun. This invention relates to an automatic painting device that sprays paint also on the sides.

Problems to be Solved by the Prior Art and the Invention This type of automatic coating equipment has a reciprocator in which a support bar is driven reciprocally in the vertical direction near a conveyor that conveys objects to be coated in a substantially horizontal direction. , two spray guns, a first and a second spray gun that spray paint toward the object to be painted, are mounted on the support bar with an interval in the running direction of the conveyor, and the object to be painted is installed between these two spray guns. A reversing device is installed, and the first detection device detects the planar shape of the front side of the object to be coated before the coating position of the conveyor. A reversing device for detecting and a second detection device for detecting the planar shape of the back side of the reversed object to be coated are respectively installed, and the object to be coated reversed by the reversing device in front of the painting position is transferred to the first spray gun. When the first spray gun approaches the front of the object, the paint ejection from the first spray gun is controlled based on data on the planar shape of the back side of the object obtained by the second detection device. When the spraying of the paint on the back side is completed and the object to be painted, which has been reversed by the reversing device, approaches the front of the second spray gun, the first detection device detects whether the object to be painted is By controlling the paint jetting from the second spray gun based on data on the planar shape of the front side of the object, paint is sprayed onto the front side of the object to be painted. To obtain the coating, the first detection device first detects the planar shape of the front side, and then the object to be coated is reversed by the reversing device.
Furthermore, since the second detection device was designed to detect the planar shape of the back side, it was necessary to install these first and second detection boxes and a reversing device for detection in front of the coating position of the conveyor. However, this method not only increases equipment costs but also requires a large installation space around the conveyor.

Means for Solving the Problems The present invention, as a means for solving the above-mentioned problems, provides a vertical line in front of the coating position of the conveyor, which divides the planar shape of one side of the object to be coated in the conveyance direction. A detection device is provided to sequentially detect data from the front of each column, and a storage device that sequentially stores data for each row sent from the detection device is connected to the detection device, and the data for each row in the storage device is stored in the storage device. A configuration including a control device that sequentially reads out the data in the stored order to control the paint jetting of the first spray gun, and sequentially reads the data in the reverse order of the stored data to control the paint jetting of the second spray gun. And so.

Functions and Effects of the Invention The automatic coating device of the present invention has the above-mentioned configuration, detects the planar shape of only one side of the object to be painted, and inverts the obtained shape data by the control device, thereby detecting the shape of the object to be painted. Since the shape data of the other side is obtained, it is possible to obtain the shape data of both sides of the object to be painted using one detection device. In addition to the detection device, it is necessary to install a detection device to detect the planar shape of one side of the object and then invert the object to be painted, and to detect the planar shape of the other side of the object that has been reversed. This has the effect of reducing equipment costs and requiring a smaller installation space for the detection device in front of the conveyor coating position.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In FIG. 1, 1 is a conveyor that suspends and conveys the object a to be coated in the horizontal direction.
A reciprocator 2 is disposed near A, and this reciprocator 2 drives a support bar 3 parallel to the running direction of the conveyor 1 vertically reciprocatingly. Spray guns 4 that eject paint toward the object to be painted are attached to both ends of the support bars 3 that protrude from the support bars 3, respectively, and each spray gun 4 has a paint supply port connected to a paint pumping source. Each on-off valve 5 is connected to a control device 6, and each on-off valve 5 is connected to a control device 6.
This control bag! i! The opening/closing is controlled by an opening/closing signal sent from the spray guns 4 and 4, and a reversing device is provided near the conveyor 1 corresponding to the intermediate portion of both spray guns 4 and 4 to turn the object to be coated a around a vertical axis and reverse it. 7 are arranged. On the other hand, in front of the coating position [A of the conveyor l, a detection device 8 that detects the planar shape of the object to be coated by, for example, reflection of sound waves is disposed, and this detection device 8 By emitting sound waves at fixed time intervals toward the object to be coated, the shape of the object to be coated is sequentially detected starting from the front in each vertical row divided in the transport direction. data is sequentially input to a shift register IO connected to the detection device 8, and this shift register 10 has a large number of serially connected memories that sequentially temporarily store the data for each column. is,
The data in each memory is sequentially shifted each time a shift pulse is input, and by setting the number of input shift pulses in advance, each data is transferred to shift register 1.
0 and the shift pulse is output when the set number of shift pulses have been input, so that the workpiece a that has passed in front of the detection device 8 is in front of the spray gun 4 on the right side of the figure. At the point when the object to be coated is about to be coated, the shape data corresponding to the object to be coated a is sequentially input to the control device 6 one row at a time in synchronization with the shift pulse, and the control device 6 receives the input data. Based on this, an on-off signal is sent to the on-off valve 5, and this control device 6
The data in each memory corresponding to the shape data of each workpiece a in the shift register 10 is sequentially read from the rear at twice the shift speed. The shape data on the opposite side of the surface facing the detection device 8 of a is obtained, and when the object to be coated a approaches the spray gun 4 on the left side of the figure, an open/close signal is sent to the open/close valve 5 based on the read data. It is designed to be sent sequentially.

When the object to be painted a whose front side planar shape is detected by passing in front of the detection device 8 comes in front of the spray gun 4 on the right side of the figure, the shape corresponds to the front side of the object to be painted a. By controlling the opening and closing of the on-off valve 5 based on the shape data, the spray gun 4 sprays the paint onto the front surface of the object a to be painted in accordance with its planar shape. The object a to be painted, which has been sprayed with paint, is rotated 180 degrees around the vertical axis by the reversing device 7 and turned inside out, and when the inverted object a comes in front of the spray gun 4 on the left side, it is rotated as described above. Since the opening/closing valve 5 is controlled to open and close based on the data on the shape of the back side, paint is sprayed onto the back side of the object a by the spray gun 4 in accordance with its planar shape.

[Brief explanation of the drawing]

Figure fj51 is a schematic diagram of an embodiment of the present invention. a: Object to be painted 1: Conveyor 2 Nireshi locator 3
: Support bar 4 Nispray gun 6: Control device 8: Detection device 10: Shift register

Claims (1)

[Claims] An elevating drive device in which a supporting member is reciprocated in the vertical direction is disposed near a conveyor that conveys the object to be coated in a substantially horizontal direction, and a first and a lower drive device for ejecting paint onto the supporting member toward the object to be coated is provided. Two second spray guns are installed at intervals in the running direction of the conveyor, and after spraying paint on one side of the object to be coated with the first spray gun,
In an automatic coating device that inverts the object to be painted and sprays paint onto the other surface side using the second spray gun, the planar shape of the one side of the object to be painted is placed before the coating position of the conveyor. The detection device includes a detection device that sequentially detects each row from the front section in a vertical direction divided in the transport direction, and a storage device that sequentially stores data for each row sent from the detection device. and sequentially reads the data for each column of the storage device in the order in which they are stored to control paint ejection from the first spray gun, and sequentially reads out the data in the reverse order of the storage order. An automatic painting device comprising a control device for controlling paint ejection from the second spray gun.