JPS5936298Y2 - Steel plate picture frame painting equipment - Google Patents

Description

[Detailed explanation of the idea] When steel plates are coated with paint, etc., there are problems such as the paint decomposing during welding, emitting toxic gases, or creating welding defects such as blowholes, so welding lines are used. A so-called picture frame coated steel plate is manufactured in which a non-painted portion is formed at the edge of the steel plate.

The present invention relates to an improvement of a coating device for obtaining this picture frame coated steel plate.

Until now, picture frame-painted steel plates have generally been painted in advance before painting using a coating device equipped with a conveyor platform that moves the plate to be painted, and a painting gun that reciprocates above the carrier in the direction of the top of the plate and sprays paint onto the plate. It was manufactured by applying a tape to the edge of the steel plate, which should be the unpainted part, and peeling off the tape after painting.

However, this method requires a lot of time and effort to apply and remove the tape, and is not efficient. Therefore, when the steel plate passes through the coating area in the coating equipment, shielding plates are placed upwardly along both side edges of the steel plate. A device has been developed that automatically forms unpainted parts on both edges of the steel plate, greatly reducing the amount of work involved.

However, recently, as the demand for this type of steel plate has increased, the above-mentioned equipment, which still requires the process of unpainting this area by applying tape, is insufficient for mass production in order to border the edges in the direction perpendicular to both edges. Therefore, there was a strong desire to develop a picture frame painting device that was even more suitable for mass production.

The present invention was developed in response to the above-mentioned demands, and is applied not only to the left and right edges in the traveling direction of the steel plate to be coated that is being transferred on the conveyor table, but also to the front and rear edges in the direction perpendicular to these edges. The object of the present invention is to provide a steel plate picture frame coating device that is suitable for mass production and can automatically obtain a non-coated portion of a predetermined width.

The present invention will be explained below with reference to drawings listed as examples.

FIG. 1 is an explanatory diagram showing an example of the proposed device, and is a plan view;
FIG. 2 is a front view taken along the line II in FIG. 1.

In the figure, 1 is a transport platform and a drive device (not shown)
The steel plate 2 to be painted is moved in the direction of arrow a and stopped again.

Reference numeral 3 denotes a coating area, which is a coating area covered by a coating gun 4 that reciprocates in the width direction intersecting the running direction of the steel plate 2 to be coated and sprays paint onto the surface of the steel plate.

Reference numeral 5 denotes a rail that extends horizontally above the conveyance table 1, and a support shaft 6 to which a coating gun 4 is fixedly attached to the lower end is suspended from the rail so as to be able to reciprocate.

Reference numeral 7 denotes a drive source for reciprocating the support shaft 6 along the rail.

Reference numeral 8 denotes a vertical coating shielding plate that shields the steel plate to be painted in the coating area 3 on the conveyor table 1 in the direction of the plate crest, and 9 denotes a support device for the shielding plate.

As shown in FIG. 3, the support device 9 includes a sheath tube 10 that is fitted around the support shaft 6 of the coating gun 4 so as to be rotatable and slidable up and down, and a shielding plate that protrudes horizontally from the sheath tube 10 and extends downward from the sheath tube 10. The holding rod 11 rotates 180 degrees around the shaft 6, and accordingly, the paint shielding plate 8 attached to the lower end is also symmetrical along a circular locus within the paint spray range centered on the paint gun. Rotate 180° to position.

The shielding plate 8 is inclined with respect to the steel plate 2 and its lower edge is installed so that it always stops in a position parallel to the width direction of the steel plate, and paints the steel plate stopped at a predetermined position in the coating area 3 in the direction of the plate crest. As the gun 4 moves, it moves together and blocks the paint sprayed from the painting gun 4 in a certain range parallel to the width direction.

Reference numerals 12 and 12 designate horizontal painting shielding plates for shielding the edges of the steel plate 2 that transports the coating area 3, at both edge positions of the plate that intersect with the reciprocation of the painting gun; 13 and 13 denote the shielding plates 12;
．． 12 supporting devices.

As shown in FIG. 4, the support device 13 includes a holding frame 15 that rotatably supports the roll 14 vertically, a driving device 16 that moves the holding frame forward and backward in the width direction, and the holding frame 15 and the driving device 1.
and an arm 17 that connects the shielding plate 1 to the holding frame.
Since the shielding plate 12 is cantilever-supported so as to be close to the upper side of both edges of the steel plate 2 in an inclined state with respect to the steel plate 2, the shielding plate 12 is evenly sprayed with paint from the paint gun 4 along both edges of the steel plate 2. can be shielded.

Further, during the shielding, the holding frame can be adjusted by moving the holding frame forward or backward by driving the drive device.

Note that the support device 13 is not limited to the above example.

18 is a detector that detects the leading edge of the steel plate 2 to be coated being transferred on the conveyor table 5; 19 is a counter that counts the time after the leading edge of the steel plate is detected based on the detection signal; Since the conveyance speed of the steel plate is constant, the movement and stopping of the steel plate on the conveyor table 5 is performed according to the time elapsed instructions from the counter 19.

Reference numeral 20 denotes a commonly used plate thickness measuring device for measuring the width of the steel plate 2 being transferred on the conveyor table 1.

Next, the operation of the present device having the above structure will be described.

First, the counter 19 is linked to the detection signal of the detector 18.
Since the distance the steel plate moves after the leading edge of the steel plate passes the detector 18 can be determined by the time signal, the unpainted width of the leading edge of the steel plate is determined by the shielding plate 8.
The steel plate 2 is stopped at a desired position by the shielding, and the unpainted width of the side edge of the steel plate is set to the desired value by the shielding of the shielding plates 12 and 12, based on the width measurement value by the plate thickness measuring device 20. Support device 13. 13 arms 17.
The position of the shield plate 12.12 is determined by adjusting the length of the shield plate 17.

After that, the support device 9 is lowered and the shielding plate 8 is placed close to the front edge of the steel plate, and then the coating gun 4 starts moving toward the crest of the plate, and at the same time, the coating gun 4 applies paint to the front edge of the steel plate. Start injection.

Immediately after finishing painting the front edge of the steel plate, the support device 9 is raised to start moving the steel plate on the conveyor table 5, and the support shaft 6 is raised.
While reciprocating along the rail 5, spraying of paint from the coating gun 4 is started, and the entire surface of the steel plate is coated according to a conventional method.

During this time, the sheath tube 10 of the support device is rotated 180 degrees to move the shielding plate 8 to a symmetrical position about the axis 6.

Next, based on the time signal from the counter 19, the steel plate 2 is stopped at a desired position where the unpainted width of the rear edge of the steel plate is shielded by the shielding plate 8 in the same manner as described above, and before that, the coating gun 4 is moved and the coating is applied. After temporarily stopping the spraying and lowering the support device 9 again to place the shielding plate 8 close to the rear edge of the steel plate, the paint gun 4 is moved in the direction of the plate crest and the paint from the paint gun is moved in the same manner as above. spraying is started to paint the rear edge of the steel plate in the width direction, producing a frame-coated steel plate.

It is clear that if the painting gun in the above embodiment is replaced with a thermal spraying gun, the apparatus of the present invention can be used as a thermal spraying apparatus for a frame of metal, etc., and the present invention is not limited to a coating apparatus.

As mentioned above, the present device can automatically form a non-painted edge of a desired width on the leading edge, trailing edge, and both side edges of a steel plate to be painted as it is transferred on a conveyor, which is different from the conventional method. This method eliminates the need for manual work such as peeling off the tape and makes it possible to efficiently manufacture picture frame coated steel plates, making it extremely effective for mass production of picture frame coated steel plates.

[Brief explanation of the drawing]

Fig. 1 is an explanatory view showing an embodiment of the present device, and is a plan view, Fig. 2 is a front view taken along the line I-I in Fig. 1, and Fig. 3 is a plan view of the device according to the present invention.
4 is a front view as viewed from the line I[I-III in FIG. 1. 1... Transfer platform, 2... Board to be painted, 3.
...Painting area, 4...Painting gun, 5...
...Rail, 6...Support shaft, 7...
Drive source, 8, 12...Painted shielding plate, 9, 13.
... Support device, 10 ... Sheath tube, 11 ...
...Holding rod, 14...Tune roll, 15...
Holding frame, 16... Drive device, 17... Bent arm, 18... Detector,... Board width measuring device. 19...Counter, 20...

Claims (1)

[Scope of utility model registration request] A coating device comprising a carrier 1 for moving and stopping a plate 2 to be coated, and a coating gun 4 suspended from a rail 5 horizontally suspended above the carriage and reciprocating in the width direction of the plate to spray paint toward the plate to be coated. , horizontal painting shielding plates 12 and 12 for shielding the edge of the plate are provided at both edge positions of the plate that intersect with the reciprocation of the painting gun, and are movable in the direction perpendicular to the edge of the plate. A vertical paint shielding plate 8 for shielding the edge of the plate is provided so as to be rotatable by 180° to a symmetrical position along a circle within the paint spraying range centered on the painting gun, and to be movable up and down. Steel plate picture frame painting equipment.