JPS6351967A - Automatic painting apparatus - Google Patents

Abstract

PURPOSE:To always keep proper distance between each spray gun and an article to be painted, by supporting a plurality of drive devices at almost right angle to the running direction of a conveyor and individually controlling the drive devices on the basis of the depth data of the article to be painted preliminarily detected. CONSTITUTION:Each of the article (a) to be painted suspended from a conveyor 1 and fed in the direction shown by an arrow receives the paint sprayed from a right-hand spray gun 5 initially and subsequently receives overlap-painting by a left-hand spray gun 5. In this case, when the article (a) to be painted comes in front of each of the spray guns 5, the depth data of the article (a) to be painted preliminarily detected and stored in a shift register 20 is read by a control unit 17 and the control signal corresponding to said data is sent to a change-over valve 16 to control an air cylinder 11. As a result, each spray gun 5 is driven so as to advance and retract through a drive device 6 and a distance proper for spraying is bept between each spray gun and the article (a) to be painted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for each workpiece being conveyed in a substantially horizontal direction by a conveyor, with a support member reciprocating up and down in the vicinity of the conveyor, provided with horizontal spacing. Regarding an automatic painting device that sprays paint with multiple spray guns attached to a This article relates to automatic painting equipment.

Problems to be Solved by the Prior Art and the Invention A reciprocator that reciprocates a supporting member in the vertical direction is disposed near a conveyor that conveys the object to be coated in a substantially horizontal direction, and In an automatic painting system, which has a configuration in which multiple spray guns are fixed at intervals in the transport direction of the objects to be coated, each object to be coated conveyed by a conveyor passes through the +7if side of the reciprocator. When coating, multiple spray guns are used to apply multiple coats, and by increasing the conveyance speed of the conveyor, coating can be done with high efficiency; however, if the surface to be coated is uneven, By moving the entire reciprocator forward and backward, the corresponding distance between each spray gun and each part of the surface to be coated is maintained constant, ensuring an appropriate spray distance for each part of the surface to be coated. It has become. However, when objects to be coated with different depths are flown randomly by a conveyor, objects with different depths correspond to the front of each spray gun, and the corresponding distance of each spray gun to the surface of each object to be coated is Since each spray gun is different, it is not possible to maintain each spray gun at an appropriate spray distance by driving the reciprocator forward and backward.

Means for Solving the Problems The present invention, as a means for solving the above-mentioned problems, includes a plurality of drive devices whose actuating bodies are reciprocated in a direction substantially perpendicular to the running direction of the conveyor, which are attached to the support member. By attaching each spray gun to each operating body of each drive device and controlling each drive device separately based on data on the depth of the object to be coated detected in advance, the corresponding distance between each spray gun and each part of the object to be coated can be adjusted. The structure was designed to adjust the

Functions and Effects of the Invention Since the automatic painting apparatus of the present invention has the above-described configuration, it is possible to secure an appropriate spray distance between each spray gun and the corresponding object to be painted in front of it. The object to be painted is sprayed with paint at appropriate spray distances by each spray gun and coated over and over again, which has the effect of efficiently painting a film with a uniform thickness.

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

In FIG. 1, reference numeral 1 denotes a conveyor that suspends and conveys the object a to be coated at a constant speed in the horizontal direction, and the coating position of this conveyor 1 is I! A reciprocator 2 is disposed near A, and this reciprocator 2 is configured to drive a support bar 3 parallel to the conveying direction of the object to be coated a back and forth in a constant stroke up and down. Both ends of the support bar 3 protrude from both sides of the reciprocator 2, respectively, and spray guns 5 pointing toward the object a are fixed to the support bar 3 at these protrusions. As shown in FIG. The air cylinder 11 is supported across the space between two guide rods 10 and 10 that are spaced apart and parallel to each other and are supported horizontally and at right angles to the casing 7. The tip of a piston rod 12 mounted parallel to the guide rod 10 and fitted into the housing 7 is connected to the moving body 8, and the tip of a mounting rod 14 fixed to the moving body 8 in parallel with the guide rod 10 is connected to the housing. The spray gun 5 is mounted horizontally by a supporting member 15 that protrudes from the front surface of the mounting rod 14 and is fixed to the tip of the mounting rod 14. Each boat at both ends is connected to a switching valve 16 connected to an air pressure supply source, as shown in FIG.
A control device 17 is connected to the control device 17 that sends out a control signal for switching between the air cylinders 1 and 6, and the changeover valve 16 is operated in response to the control signal to change the protruding length of the piston rod 12 of the air cylinder 11. The moving body 8 moves and the protrusion length of the mounting rod 14 from the housing 7 is changed, thereby changing the distance between the spray gun 5 and the object a to be coated on each part of the object a. On the other hand, at a position in front of the coating position [A of the conveyor l, there is a detection device i! that detects the depth of each part of each object to be coated passing through that position. 18 is installed, and this detection device 18 has shift registers 20 connected to each of the control devices 17, respectively.
．． 20 are connected in parallel, and data on the depth of each object to be painted a detected by the detection device 18 is sequentially sent to both registers 20 and 20 and temporarily stored, and each control Table 2i17 shows that when an object to be painted a comes in front of the corresponding spray gun 5, depth data corresponding to the object to be painted a is read from each shift register 20, and a control signal corresponding to the data is sent to the switching valve. 16
As a result, each spray gun 5 can be individually controlled to move forward or backward.

Next, the operation of this embodiment will be explained.

Each object to be painted a, which is suspended from the conveyor 1 and conveyed in the direction of the arrow in FIG. When the object a to be painted approaches the front of each spray gun 5, the depth data of the object a detected in advance and stored in the shift register 20 is applied. The control device 1
7 reads out the data, and sends a control signal corresponding to the data to the switching valve 16 to control the air cylinder 11, whereby each spray gun 5 is driven forward or backward according to the unevenness of the object to be painted, and sprays various parts of the unevenness. As a result, paint is sprayed onto each object a by each spray gun 5 at an appropriate spray distance. Even when a is randomly flowed by the conveyor 1, each spray gun 5 sprays each part of each workpiece a at an appropriate spray distance, and each workpiece a is appropriately overcoated by both spray guns 5.5. be done.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, and FIG. 2 is a perspective view showing how a spray gun and its driving device are attached to a reciprocator. a: Object to be painted l: Conveyor 2 Nireshi locator 3
: Support bar 5=Spray gun 6: Drive device 8: Moving body 17: Control'AA position 18: Depth detection device

Claims (1)

[Claims] A reciprocating drive device that reciprocates a support member in the vertical direction is disposed near a conveyor that conveys the object to be coated in a substantially horizontal direction, and a plurality of sprayers that eject paint toward the object to be coated are provided on the support member. In an automatic coating device, the guns are mounted substantially horizontally at intervals in the conveying direction of the objects to be painted, and each of the objects to be painted that is conveyed in front of each spray gun is automatically coated, A plurality of drive devices whose actuating bodies are reciprocated in a direction substantially perpendicular to the running direction of the conveyor are attached to the support member, and each of the spray guns is attached to each of the actuating bodies of each of the drive devices, and the spray gun is attached to each of the actuating bodies of each of the drive devices. Automatic painting characterized in that the distance between each of the spray guns and each part of the object to be painted is adjusted by controlling each of the driving devices separately based on data on the depth of the object to be painted. Device