JPS637104B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device for a coating coating apparatus, and more particularly to a cleaning device that enables a quick and smooth switching operation when a flux change is required.

As one of the manufacturing processes for coated welding rods, there is a coating process in which a kneaded coating agent (flux) is uniformly applied around the core wire. A conventional coating system for this purpose is one in which a flux forming machine and a coating machine are separated. That is, after the flux sent from the flux shoot is formed into a short cylindrical shape using a forming press or the like, the flux molded product is sent to the next flux coating machine using a conveyor or the like. In a coating machine, when a flux molded product is pushed into a cylinder and pressurized by a piston of a pressurizing cylinder such as a hydraulic cylinder, the flux is discharged from a die portion of a die head attached to the rear end of the cylinder. At this time, the core wire is supplied to the die of the die head from another direction at a predetermined speed, so that the core wire exits the die with its periphery covered with a flux layer concentrically.

The coating is applied as described above, but there are many types and brands of coated welding rods, and depending on the factory, it may be necessary to manufacture multiple brands of welding rods, but in this case, switching operations may be extremely difficult. There are problems that require time and effort. For example, when a predetermined amount of flux is used to complete the painting process, a different brand of welding rod is manufactured using flux with a different composition.
It is necessary not only to simply replace the flux, but also to remove the flux that unavoidably remains in the die head and to clean the inner surface of the flux cylinder. Conventional flux cleaning work mainly relies on manual labor, which is extremely inefficient, and it is troublesome to remove the die head from the cylinder and clean its interior, and even if it takes a lot of time, it is impossible to completely remove the residual flux. I couldn't have expected it. Therefore, due to the long switching time, the operating rate of the coating equipment decreases, resulting in a problem that productivity cannot be improved.

The present inventors improved the conventional coating apparatus described above and developed a coating apparatus in which at least a pair of flux cylinders are held interchangeably between two positions, a flux forming position and a flux painting position, It has been found that effects such as eliminating waste between flux molding and painting and enabling efficient painting can be obtained.

The present invention makes it possible to quickly and automatically clean the flux cylinder of this new coating application equipment, thereby reducing changeover time to a fraction of the conventional time when changing flux, thereby increasing productivity. The object of the present invention is to provide a cleaning device for coating equipment and coating equipment that can be greatly improved.

The details of the present invention will be explained below based on embodiments shown in the drawings.

FIG. 1 shows the entire coating apparatus equipped with the cleaning device of the present invention. In the figure, 1 is a flux system that can cut out a predetermined amount of flux sent from a wet mixer using an extrusion cylinder 2. 3 is a flux forming and coating machine connected to the cutout position of the chute 1; 4 is a flux forming and coating machine connected to the cutting opening position of the chute 1;
The coating machine 3 is installed on a base, 5 is a core wire feeder, 6 is a cross conveyor, 7 is a forming press cylinder, and 8 is a coating die head.

The flux forming and coating machine 3 is provided with two rotating disks 10, 11 whose centers are fixed to a rotating shaft 9 supported on a base 4.
A pair of flux cylinders 12 and 13 are held symmetrically across the rotating shaft 9, and a molding cylinder is placed at one end of the flux cylinders 12 and 13 (on the opposite side of the die head) at a distance. It is constructed by fixing a pressurizing cylinder 14 and a painting pressurizing cylinder 15 to a base 4. The rotating disks 10, 11 are rotated by the rotation of a rotating shaft 9 connected to a suitable drive device, and the pair of flux cylinders 12, 13 are moved to two desired positions, that is, the flux coating position (coating cylinder). 15) and the flux forming position (the axis of the flux cylinder coincides with the axis of the forming cylinder 14).

Further, the forming presser cylinder 7 is installed at the other end of the flux cylinder corresponding to the flux forming position, and the coating die head 8 is installed at a position connectable to the flux cylinder at the coating position. A flux receiving tube 16, which is integrated with the cutting opening of the flux shoot 1, is arranged between the molding pressurizing cylinder 14 and the flux cylinder 12 or 13.

Therefore, a pair of flux cylinders 1
2 and 13 are in the predetermined flux forming and painting position, the painting pressurizing cylinder 15 is operated to move the piston 18 into the flux cylinder 1.
2, the flux is pressurized and ejected from the die of the die head 8. At this time, the core wire is supplied to the die head 8 from the core wire feeder 5, and the core wire is coated with flux. At the same time, the other molding pressure cylinder 14
, the piston 17 is inserted into the flux cylinder 13 through the receiving tube 16, and the piston of the forming presser cylinder 7 is inserted from the other end of the flux cylinder 13, and the flux is formed by these two pistons. Let's do it. 1
Immediately after completing one batch of painting and molding operations, the flux cylinder is rotated and replaced, and then the next painting and molding operation is restarted.

FIG. 2 shows a specific example of the cleaning device of the present invention. The cleaning cylinder 19 is installed at a position that substantially coincides with at least one of the neutral positions 12a and 13a of the rotation locus. That is, the pressure cylinder 1 is placed between the flux cylinders 12 and 13.
On the opposite side of 4 and 15, install flux cylinder 1.
A cleaning cylinder 19 is arranged so that its axis is parallel to the axes of flux cylinders 2 and 13, and a cleaning member such as a brush 20, which is inserted into the flux cylinders 12 and 13, is attached to the tip of the cylinder rod. . The stroke amount of the cleaning cylinder 19 is such that the brush 20 at the tip can slide over the entire shaft length of the flux cylinders 12 and 13. Further, the shape and material of the cleaning brush 20 are designed so that it can slide on the inner walls of the flux cylinders 12 and 13 and almost completely remove the remaining flux. As for the material, a wire brush, a synthetic resin brush, etc. may be selected.

Since the present invention is configured in this manner, for example, if it is necessary to change the brand of flux during molding or painting, the insertion is temporarily stopped and the piston 1 is changed.
7 and 18 are evacuated from the flux cylinders 12 and 13, the rotating disks 10 and 11 are rotated to stop the flux cylinders 12 and 13 at the neutral positions 12a and 13a shown in FIG. 2B, Match the cleaning cylinder 19. In this state, the cleaning cylinder 19 is operated to insert and slide the brush 20 into the flux cylinder 12 or 13 and reciprocate one or more times to remove flux from the inner wall of the cylinder. At this time, if water is injected from the opposite side of the flux cylinder 12 or 13 using a high-pressure nozzle, the flux cleaning effect will be further improved. Also, at the same time, die head 8
Flux cleaning work will also be carried out.

The above example shows an example in which one cleaning cylinder 19 is provided, and when cleaning of one flux cylinder is completed, the other flux cylinder is rotated to the cleaning cylinder 19 position to perform cleaning. . Of course, the cleaning cylinder 19
It is also possible to install two flux cylinders and clean the two flux cylinders 12 and 13 at the same time. Further, the cleaning cylinder 19 may be made movable, moved to a predetermined position when cleaning is to be performed, and retreated after cleaning is completed.

Once the flux cylinders 12, 13 and die head 8 have been cleaned, the flux cylinders 12, 13 are returned to their original molding/painting positions and the molding/painting work using a new brand is resumed.

As explained above, according to the cleaning device of the present invention,
The flux remaining in the flux cylinder can be completely removed, and the work can be done almost automatically by mechanical means, resulting in extremely high work efficiency. As a result, even if the brand of flux is changed, molding and painting operations can be resumed quickly using the new brand, which has a very large practical effect.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing a welding rod coating coating device to which the present invention is applied, Fig. 2 A is a sectional view showing an example of the cleaning device of the present invention, and Fig. 2 B is a forming and painting of a flux cylinder. It is a figure which shows the relationship between a position and a cleaning position. 1... Flux shoot, 2... Extrusion cylinder, 3... Molding/painting device, 4... Base, 5
...Core feeder, 6...Cross conveyor, 7...
Presser cylinder, 8... Die head, 9... Rotating shaft, 10, 11... Rotating disk, 12, 13... Flux cylinder, 14... Molding pressure cylinder, 15... Painting pressure cylinder, 16... ... Receiver, 17, 18... Piston, 19... Cleaning cylinder, 20... Cleaning brush.

Claims (1)

[Claims] 1. Two flux cylinders 12, 13 that can be rotated between two positions: a molding position and a painting position.
A molding pressurizing cylinder 14 and a molding presser cylinder 7 are installed on both sides of the axis of the flux cylinder at the molding position, and a painting pressurizing cylinder 15 and a coating die head are installed on both sides of the axis of the flux cylinder at the painting position. 8, a cleaning cylinder 19 is provided at a position corresponding to the rotational intermediate position of the flux cylinders 12 and 13 between the two positions, and a flux cylinder is installed at the tip of the rod of the cleaning cylinder 19. 1. A cleaning device for coating equipment, characterized in that a cleaning member 20 inserted therein is attached.