JP2554367Y2 - Automatic coating equipment with reverse coating function - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention has a reversing coating function in which an object to be coated is automatically reversed on both sides based on the detection data of the front shape and the reversal data while reversing the object to be coated during transportation. The present invention relates to an automatic coating apparatus, and more particularly, to an improvement in a part for detecting a hanger of an object to be coated which is necessary for forming inversion data.

[0002]

2. Description of the Related Art Conventionally, as a means for detecting a hanger for forming inverted data as described above, a sensor for detecting a hanger is provided separately from a shape sensor for detecting a front shape of an object to be coated. Was common.

[0003]

[Problems to be Solved by the Invention] In the conventional device, two sensors are required, so that the equipment cost is increased, and the electric wiring and the like are complicated, and the installation work is troublesome.
Also, it is difficult to synchronize the signals of both sensors,
There is a disadvantage that the detection light interferes with each other and a trouble easily occurs.

[0004]

SUMMARY OF THE INVENTION An automatic coating apparatus with a reversing coating function according to the present invention has been devised in view of the above points. Data detecting means for receiving the detection signal from the hanger detecting section and forming the inverted data from the detection data of the front shape of the object to be coated.

[0005]

When the hanger passes through a hanger detector provided in a part of the shape sensor while the front shape of the object to be coated is detected by the shape sensor, the hanger is detected by the inverted data forming means. Thus, inverted data is formed from the front shape detection data by inverting the front and back with the hanger at the center.

[0006] The reversal data is used for paint ejection control when the reverse side of the object to be coated, which has been automatically painted on the front side and then reversed, is automatically painted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 denotes a transport line for suspending a workpiece a on a conveyor 2 with a hanger 3 and transporting the workpiece a in the direction of the arrow. The first and second coating guns 6 and 7 which are reciprocally driven are provided at regular intervals before and after in the transport direction of the workpiece a.

A reversing device 8 is provided at a position corresponding to between the coating guns 6 and 7 for reversing the conveyed workpiece a around the hanger 3 as a center of rotation.

A shape sensor 10 is provided in the coating machine 5 on the front side in the conveying direction of the workpiece a. This shape sensor 1
Reference numeral 0 denotes a light projector (not shown) in which a plurality of light emitting elements are arranged in a row, and a light receiver 11 in which the same number of light receiving elements 12 are arranged in opposition to each light emitting element. ,
The presence or absence of a passing object is detected by whether or not the light receiving element 12 receives the detection light from the light emitting element. Among them, the upper few elements are identified by the hanger detector 14 which detects the passage of the hanger 3 and outputs a detection signal, and the other parts are the detectors of the front shape of the article a. It is 15.

The structure from the object detection unit 15 to the first coating gun control unit 19 is the same as the conventional one. When the object a passes through the object detection unit 15, the object is disposed along the vertical direction. Signals indicating the presence or absence of the coating material a are sequentially taken into the data take-in unit 17 and the detection data is sent to the conveyor pulse encoder 2.
Via a first shift register 18 which is activated by a signal of 0
The workpiece a is delayed from the shape detection position by the time it reaches the first painting position equipped with the first painting gun 6 and is input to the first painting gun controller 19 to detect the presence or absence of the workpiece a. In accordance with the data, the spraying and stopping of the paint from the first painting gun 6 that moves up and down is controlled, whereby the surface of the workpiece a is automatically painted.

The hanger detector 14 includes an inverted data generator 2
1 is connected to the inverted data forming unit 21.
The detection data of the front shape of the article to be coated a is sequentially taken in through the data acquisition section 17 and, when a detection signal is input from the hanger detection section 14, the object to be coated is based on the above detection data. Inverted data in which the front shape of the object a is inverted with respect to the position of the hanger 3 is formed.

The output side of the inversion data forming section 21 is controlled by a second shift register 22 which is also operated by the signal of the conveyor pulse encoder 20 to control the spraying and stopping of the paint from the second paint gun 7. It is connected to the control device 23. That is, the inversion data formed by the inversion data forming unit 21 is delayed by the time required for the workpiece a to reach the second coating position equipped with the second coating gun 7 from the shape detection position, and the second coating gun control device is controlled. 23.

This embodiment has such a structure. When the object a passes through the shape sensor 10, its front shape is detected by the object detection unit 15, and the detected data is sent to the data acquisition unit 17. When the hanger 3 suspending the object a is detected by the hanger detector 14 in the middle of the operation, the inverted data forming unit 21 changes the front shape of the object a based on the detection data. Inverted data inverted around the hanger 3 is formed.

When the object a reaches the first painting position, as described above, spraying of the paint in a range corresponding to the surface of the object a from the first painting gun 6 based on the detection data of the front shape. Is performed.

When the surface coating by the first coating gun 6 is completed, the object to be coated a is turned upside down by the reversing device 8 with the hanger 3 as the center of rotation. Subsequently, when the object a, which has been turned upside down, reaches the second coating position, the spraying and stopping of the paint from the second coating gun 7 mounted thereon are controlled based on the inversion data, and the object to be coated is controlled. The paint is sprayed in a range corresponding to the back surface of “a”.

[0016]

According to the present invention, the hanger detecting unit is provided in a part of the shape sensor for detecting the front shape of the object to be coated, and is used as one sensor, thereby reducing the equipment cost. In addition, the electrical wiring is simplified, and the installation work can be simplified. In addition, compared with the case where two sensors are used, there is an effect that signals can be synchronized well, interference of detection light can be avoided, and inverted data can be formed accurately.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

[Explanation of symbols]

a: object to be coated 1: transport line 2: conveyor 3: hanger 5: coating machine 6: first coating gun 7: second coating gun 8: reversing device 10: shape sensor 11: light receiver 1
2: light receiving element 14: hanger detection unit 15: coating object detection unit 17: data acquisition unit 19: first coating gun control unit 21: inverted data forming unit 23: second coating gun control unit

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-54-43949 (JP, A) JP-A-57-105258 (JP, A) JP-A-3-270756 (JP, A) JP-A-58-58 64151 (JP, A) JP-A-63-65974 (JP, A) JP-A-4-90907 (JP, U) JP-A-59-39662 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A first and a second coating gun, which is reciprocally driven up and down, is spaced apart in a transport direction on a side of a transport line for transporting a workpiece in one direction by suspending the workpiece on a conveyor with a hanger. Device, a reversing device for reversing the coating surface of the object to be coated with respect to the hanger is provided between the respective coating guns, and a plurality of light emitting elements are arranged in front of the coating gun in the conveying direction. A shape sensor for detecting the front shape of the object to be coated is installed, comprising a light emitter provided and a light receiver having the same number of light receiving elements arranged in a row facing each of the light emitting elements. Controlling the ejection and stopping of the paint from the first paint gun based on the automatic coating on the surface of the object to be coated, and creating inversion data centering on the hanger from the detection data, Of the paint from the second paint gun based on the data. In an automatic coating apparatus with a reverse coating function that controls the ejection and the stop to automatically apply the reverse side of the object to be coated, the shape sensor includes a hanger for the hanger corresponding to a passing area of the hanger. An automatic reversing coating function provided with a reversing coating function, wherein a reversing data forming means for receiving the detection signal from the hanger detecting unit and forming the reversing data from the detection data of the front shape of the object to be coated is provided. Painting equipment.