JPS6250374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer device for transferring a plate-like object such as a roof tile from a flat state to an upright state, particularly for powder-coated roof tiles. The present invention relates to a conveyor transfer device suitable for use in various locations.

In recent years, in the manufacturing method of tiles, synthetic resin powder is painted and baked on the surface of tiles such as unglazed tiles, thick slate tiles, cement tiles, etc. to form a hardened synthetic resin coating to improve the water resistance, weather resistance, and durability of tiles. Proposals have been made to obtain products that have good properties and excellent aesthetic appearance. In this method of powder coating roof tiles, the tiles that have been dried and heated are arranged flat on a coating conveyor and then introduced into a powder coating device, which coats the surface of the roof tiles with a suitable synthetic resin powder. The tile is then introduced into a baking furnace and heated to harden the resin on the surface of the tile, producing a painted tile.

In the case of powder coating of tiles like this, a conveyor is used to arrange the tiles in a wide and flat manner from the powder coating to the baking furnace, so the entire coating equipment requires a large area, and the unit area The processing capacity per unit is small, and because the tiles are arranged in a flat shape, the flow of hot air in the baking furnace becomes uneven, resulting in uneven baking, and the hardened resin coating is continuous on adjacent parts of adjacent tiles. However, if this is forcibly separated, non-uniform areas will be formed in the molded film, making it difficult to obtain a uniform product of good quality.

In order to improve these drawbacks and obtain high-quality products, the present invention first applies resin powder to roof tiles that are laid flat on a conveyor with one end overlapping one after another in the direction of travel. A device that transfers tiles from a flat position to an upright position on a conveyor so that tiles can be rearranged in an upright position without the coated tile surface touching anything else and baked uniformly in a baking furnace. Our goal is to provide the following.

According to the apparatus of the present invention, it is possible to reduce the area occupied by the baking furnace, there is no uneven distribution of hot air in the baking furnace, and resin-coated tiles of good quality that are baked uniformly can be obtained. Next, the apparatus of the present invention will be explained using painting of roof tiles as an example, but it goes without saying that it can be applied to other plate-like objects other than roof tiles.

As shown in each drawing, the tile conveyor transfer device of the present invention is configured to convey tiles A coated with synthetic resin paint powder in a powder coating room (not shown) in a wide and flat line. Paint conveyor 2 installed horizontally
A transfer conveyor 4 is provided with a step below the tile delivery end of the conveyor 2 so that the engaging conveyor surface is tilted downward in the direction of travel, and a sprocket is installed on the inclined surface 8 of the conveyor 4 from below upward. It consists of a baking conveyor 3 having a wick for holding tiles upright while rotating as a shaft.

The coating conveyor 2 is a chain conveyor 6 with multiple strips.
On top of this, a plurality of tiles are lined up horizontally in a wide manner with no gaps, and one end is stacked on top of the other in the traveling direction (vertical direction) one after another without any gaps, and in a painting room (not shown), tiles A The resin paint powder is applied to the surface of the machine and progresses, and its delivery side is shown in the figure. On the delivery side of this coating conveyor 2, a chain conveyor 4 consisting of a plurality of strips constituting a transfer conveyor 4 enters alternately into the gaps between each strip of the conveyor chain.
And, a step is provided at a position where the transfer conveyor surface 8 is lower than the coating conveyor surface 2 by at least the thickness of the tile, and further,
It is arranged at an angle so that it decreases in the direction in which the tiles move.

The baking conveyor 3 consists of a plurality of wicket-type conveyors 11 whose upper surfaces move horizontally, and wickets 12 are arranged on each conveyor 11 at appropriate equal intervals, and each wicket 12 is a platform on which tiles A are placed. 14, and a support arm 15 tilted upward from the platform 14 so that the tile A is held slightly tilted in the advancing direction of the conveyor so as not to fall.

The wicket 12 of the baking conveyor 3 is configured to rotate from below around a sprocket and pass upward through the gap in the conveyor chain of the transfer conveyor 4, and the trajectory of the tip of the wicket base 14 follows the sprocket of the baking conveyor 3. The transfer conveyor 4 is disposed so as to pass near the lower end of the inclined surface 8 of the transfer conveyor 4.

The device of the present invention configured as described above operates as follows. Tiles A are arranged on a coating conveyor 2 that moves at a constant speed, flat and without gaps like mushrooms on the roof, and introduced into a powder coating room (not shown).
The surface of the container is coated with synthetic resin paint powder and sent out (Figure 1). In this way, the roof tile A sent out from the painting room exceeds the delivery end of the painting conveyor 2 and extends onto the transfer conveyor 4. When the center of gravity of the tile exceeds the delivery end of the conveyor 2, the tip of the tile begins to fall onto the transfer conveyor 4, but at this time, the support arm of the wicket 12 of the baking conveyor 3, which moves at a constant speed, The tip of 15 is
A trajectory is drawn that moves from bottom to top through the gaps between each chain of the transfer conveyor 4, and this support arm 15
The leading end of the roof tile A comes into contact with the back surface of the descending roof tile A and acts to lift the leading end of the roof tile A. In this case, the position where the tip of the wicket support arm 15 contacts the back surface of the tile A is slightly forward of the center of gravity of the tile A, so that the wicket support arm 15 is aligned with the tile delivery position.
It is important to adjust the moving speed of each conveyor 2 and 3 so that the movement of the leading end of the conveyor is synchronized with the movement of the leading end of the conveyor (Fig. 2). The tile A supported in this way gradually moves forward, and the rear end of the tile A comes off the coating conveyor 2 and is transferred onto the transfer conveyor 4, and thereafter moves at the moving speed of the transfer conveyor 4. do. During this time, the tip of the wicket support arm 15 continues to move upward in a circular orbit, gradually raising the roof tile A (FIG. 3). Further, as each of the above movements progresses and the wicket 12 moves horizontally, the rear end of the tile A is placed on the wicket base 14, and at the same time, the back side of the tile A comes into contact with the support arm 15.
By stably holding the tile A in the inclined position, the transfer of the tile A from the coating conveyor 2 to the baking conveyor 3 and the standing maintenance are completed (FIG. 4). The object of the present invention can be achieved by configuring the above operation to be performed continuously for all tiles that are sent out one after another.

As is clear from the progress of each figure, the above sequence of operations is characterized by the fact that no object comes into contact with the powder-coated surface of tile A until it is held from the coating conveyor 2 to the baking conveyor 3. be.

In other words, the tip of tile A is coated with powder paint on the painting conveyor 2, but the rear end is not coated because it overlaps with the tip of the next tile, so it is not transferred onto the baking furnace conveyor. The feature is that when standing up, the former is held with the painted side facing up and the latter with the unpainted part facing down. The tile A is then sent into a baking furnace (not shown) and heat treated, and the coating resin is baked and hardened to form a strong coating.

If a step is provided between the painting conveyor 2 and the transfer conveyor 4, when the tile A is transferred to the transfer conveyor 4,
Since the overlap with the tile A' to be sent out next is released and completely separated, it is possible to prevent the coated surface of the tile A from coming into contact with the tile A' to be sent out next. Also,
For the same reason, the moving speed of the transfer conveyor 4 needs to be faster than that of the coating conveyor 2.

Further, in the above description, the transfer conveyor 4 is shown in a position where it is tilted forward and downward. Due to this inclination, the tile A transferred onto the transfer conveyor 4 is more completely separated from the tile A' to be sent out next, and
Since the rear end of tile A is pushed into the wicket base 14, the wicket base 14 of tile A
The receipt of funds will be stable.

In the apparatus of the present invention, the speed of each conveyor is not constant, and the speed ratio of the transfer conveyor 4 to the coating conveyor 2 must be at least 1 or more, preferably 2 or more, and the speed of the baking conveyor 3 must be It is sufficient that the circumferential speed of the tip of the support arm 15 of the wicket 12 at the tip of the conveyor 3 is about the same or lower than that of the transfer conveyor 4.

The above explanation describes the powder coating process for roof tiles, but it can also be applied to concrete products, ceramic products, metal products, etc. other than roof tiles, and can also be applied to painting other than powder coating, chemical treatment, and chemical treatment. be.

In the above embodiment, the baking oven conveyor was explained to be operated continuously in synchronization with the transfer conveyor, but the baking oven conveyor was stopped while the tiles were being transferred from the coating conveyor to the transfer conveyor. When it is detected that the tile has reached a predetermined position on the transfer conveyor, the tip of the wicket of the baking furnace conveyor immediately pushes up the tile and moves it to the normal position on the baking conveyor. The objects of the invention are achieved.

As described above, according to the device of the present invention, the tiles in the baking furnace can be held upright at narrow intervals by the wickets, so the equipment area of the baking furnace can be reduced and saved, and the hot air can flow between each tile. Since it can pass through evenly and evenly, baking processing is possible with good thermal efficiency, and the surface of the tile coated with powder does not come into contact with other objects, which prevents the paint films from adhering to each other. A high-quality paint film can be obtained without any trouble caused by

[Brief explanation of the drawing]

FIGS. 1 to 4 are schematic diagrams sequentially showing the tile conveyor transfer device of the present invention in accordance with the order of tile transfer and conversion. In the diagram, A, A'...Tile, 2...Painting conveyor,
3... Burning conveyor, 4... Transfer conveyor, 12
... Wicket, 14 ... Base, 15 ... Support arm.

Claims (1)

[Scope of Claims] 1. A coating conveyor in which plate-shaped bodies coated with powder are sent out side by side with one end overlapping in the traveling direction, a step greater than the thickness of the plate-shaped bodies is provided below the sending end of the coating conveyor. A transfer conveyor consisting of multiple chain conveyors whose conveyor surfaces that are provided and engaged are inclined downward in the direction of travel, and whose speed is faster than a painting conveyor. The support arm rotates upward from the top around the sprocket and engages the front end of the back surface of the plate-like body to lift and hold the plate-like body upright. A wicket-type baking conveyor, in which wickets extending upward and consisting of a platform on which a plate-shaped object is placed are arranged at intervals, and the peripheral speed of the wicket tip is operated at a speed equal to or lower than that of the transfer conveyor. A conveyor transfer device for plate-shaped objects.