JPH086536Y2 - Paint drying oven - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a coating product drying furnace used for drying a coating film after coating, and particularly to a loading / unloading device for transporting a coating product while suspending it from a moving roller. The present invention relates to a continuous process type drying oven for coated products.

INDUSTRIAL APPLICABILITY The drying oven of the present invention is suitable for drying painted automobile parts, airplane parts, and the like, and for sequentially drying a considerable number of painted products.

(Prior Art) In general, a continuous processing type drying oven is a type in which a coated product is placed on a dolly and conveyed by a floor conveyor depending on the mode of a transfer mechanism provided, and an overhead while suspending the coated product from a moving roller. They are roughly classified into those that are carried on a conveyor. In the latter type of drying oven, a guide frame for traveling the moving rollers is arranged from the outside through the inlet to the upper inside of the oven and further through the outlet to the outside, or the inlet and the outlet are In the case of the same drying oven, the guide frame is installed from the outside to the inside of the oven through the entrance and exit.

(Problems to be solved by the invention) By the way, if the drying process is performed with the inlet / outlet of the drying oven open, there is a large amount of heat dissipation and there is a problem in terms of heating efficiency. This is not preferable because it may invite.

Therefore, it is necessary for the drying oven to have a structure in which the entrance and exit of the coated article is shielded with a door or the like, and the inside of the oven can be processed while being sealed. Therefore, in the above hanging type drying oven,
The entrance / exit structure, especially the furnace body structure through which the moving roller passes, is required to be as closed as possible within a range that does not hinder the running of the roller.

As one of the methods, there is a method in which a part of the door is cut out and a guide frame for running the roller is passed through the formed hole space.

However, this method allows the air inside the furnace to leak out from the hole space, so the degree of airtightness inside the furnace is never sufficiently high, and the door of the upper entrance and exit is a double door type (double door) or a folding door. If it is a door, it cannot be applied because the guide frame interferes with the opening and closing of the door, and the applicable range is mainly when the door is a sliding door type that moves to the left, right or left and right. There is a problem that it is limited to. The sliding door type is
When the door is open, almost the entire door protrudes to the side of the furnace, which requires a large installation space that is almost twice the size of the door.
It is a disadvantage.

The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to prevent heat dissipation and leakage of a harmful atmosphere in a hanging transfer type drying oven regardless of the type of door structure. It is an object of the present invention to provide a coated product drying furnace that can suppress and efficiently perform continuous drying processing.

(Means for Solving the Problems) A coated product drying oven according to the present invention is a drying furnace equipped with a loading / unloading device for transporting a coated product while suspending it from a moving roller. And a guide frame through which the moving roller travels is inserted into the through recess, and a shield plate is swingably and the same inside the through recess. It is characterized in that the concave portion is provided so as to be substantially shielded.

Like the general oven, the drying oven of the present invention also has an inlet and an outlet for coated products, or an inlet and outlet where these are one and the same, and further outside these outlets. Is equipped with a door that can be opened and closed, and when it is closed, the inside of the furnace is sealed. The type and structure of the door are not limited at all, but a folding door or the like is advantageous in terms of space. Further, the present drying oven is an oven provided with a device for suspending and transporting a coated product, that is, a moving roller, a guide frame and the like. The mounting positions of these members will be described below.

In the drying oven of the present invention, the upper side wall of the mouth is cut out to form a recess penetrating the oven body. The recess may be a hole having a rectangular cross-section that connects the inside and outside of the furnace, and a long guide frame can be inserted into the inside of the furnace from outside the furnace, and the moving rollers can run along it. Be prepared for. The guide frame that supports the rollers may have a structure that is generally used in this type of transport device, that is, a frame body in which left and right frames having a U-shaped cross section face each other.

Further, the drying oven of the present invention comprises one or more shield plates vertically suspended in the through recess, preferably in the traveling direction of the moving roller. The shielding plate is, for example,
The through recess is mounted so as to be substantially shielded by notching the upper portion of the guide frame and providing the shielding plate so as to reach from the upper surface of the recess to the lower portion of the guide frame (travel surface of the moving roller).

(Operation) In the present invention, in addition to the door being capable of closing the entrance / exit of the coated article, the penetration recess formed above the entrance / exit for passing the guide frame is also substantially shielded by the shield plate. The drying process can be performed with the inside sealed almost completely.

Moreover, even if the shielding plate is installed so as to occupy the inside of the guide frame, the shielding plate is swingable, so even if it comes into contact with the traveling moving roller, it is pushed up and the traveling of the roller is not restricted. The roller can freely run inside the furnace along the guide frame between the outside and the inside of the furnace.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, the coating product drying furnace 1 of the embodiment has four
By simultaneously operating the drying furnace, that is, by operating the fan 11, the air heated by the heater 13 is sent in the direction of the arrow f and supplied into the drying chamber 12 through the filter 14
4 coated products suspended by the transfer device 3 in the drying chamber 12
20 ... is a furnace that is simultaneously dried.

This drying furnace 1 has four open doors as shown in FIG.
10 ... Are provided outside the carry-in / out port (not shown) corresponding to the transport path of each coated product 20.

As can be seen by referring to FIG. 1 and FIG. 3 in addition to this figure, the furnace 1 is located above the door 10, that is, the carry-in / out port 2
A recess 5 having a rectangular cross section is formed on the upper side wall 4 to penetrate the furnace body, and the outside 6 and the inside 7 of the furnace are communicated with each other. Further, as shown in these drawings, the upper part of the through recess 5 is installed so that a horizontally long U-shaped frame plate 17 is projected downward to the inside and the outside of the furnace, and the inside of the conveyer device is installed. The guide frame 9 of No. 3 is inserted and fixed.

The frame plate 17 has support shafts 16 and 16 mounted on its inner upper portion,
Then, the pair of shielding plates 15 and 15 are arranged around the axes 16 and 16 to form the frame 9
It is arranged so that it can swing freely in the direction of arrangement.

On the other hand, the guide frame 9 has a general structure in which the left and right frames having a U-shaped cross section face each other, and the moving roller 8 is housed inside the guide frame 9 so as to run freely.
(FIG. 1) is cut out in the vicinity of the recess 5 over a length 1 (FIG. 3). The shield plates 15 and 15 are provided below the notched frame upper part 21, that is, from the upper inside part of the frame plate 17 through the inside of the guide frame 9 to almost reach the traveling surface of the moving roller 8. As a result, the recess 5 is substantially shielded.

The lower part of the through recess 5 is formed by attaching two rubber flat plates 18, 18 so as to partially overlap the left and right mounting parts 19, 19, and the rubber flat plate 18 also shields the lower part of the recess 5. It has a structure that allows the suspension member 22 connected to the moving roller 8 to pass therethrough.

In the present embodiment, the shield plate 15 covers the inside of the guide frame 9 and shields the concave portion 5. However, since the shield plate 15 is vertically oscillated, the shield plate 15 is guided when the coated product 20 is conveyed. Even when it comes into contact with the moving roller 8 traveling inside 9, the roller 8 is pushed upward to the position shown by the arrow p at the time of loading and the arrow q at the time of unloading so that the roller 8 can pass. Therefore, the moving roller 8 can freely move from the outside of the furnace 1 to the inside and from the inside of the furnace to the outside of the furnace.

Further, in the furnace 1 of the embodiment, the door 10 closes the loading / unloading port 2, and the through holes 5 are substantially covered by the shielding plates 15, 15, so that the inside of the furnace can be sealed almost completely. In addition, it was possible to more effectively suppress heat dissipation and harmful furnace gas leakage than before. This effect can be obtained also in the case of doors other than the opening door, for example, sliding door type doors.

(Effects of the Invention) As described above, the coated product drying furnace according to the present invention has a structure in which the door for carrying in and out the coated product through the door and the through-concave portion through which the guide frame passes through the shielding plate are substantially closed. Therefore, the drying process can be performed in a state where the inside of the furnace is almost completely sealed, and thus heat dissipation and leakage of harmful atmosphere can be effectively suppressed. The present invention is advantageous in that it can be applied regardless of the type of furnace door structure.

Moreover, in the drying oven of the present invention, even if the shielding plate occupies the inside of the guide frame, the structure does not limit the free running of the moving roller, so that an efficient continuous drying process can be performed.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of an upper side wall of a carry-in / out port of a coating product drying furnace of an embodiment of the present invention, FIG. 2 is a front view showing a coating product drying furnace of the embodiment, and FIG. 3 is an embodiment. The figure which shows the principal part of the carrying in / out mechanism of the coating product drying furnace of FIG. 4, and FIG. 4 is a figure which shows the inside of the coating product drying furnace of an Example. In the figure, 1 ... Paint drying oven 2 ... Carry-in / out port 3 ... Carry-in / carry-out device 4 ... Upper side wall 5 ... Penetration recess 6 ... Outside furnace 7 ... Inside furnace 8 ... Moving roller 9 ... Guide Frame 10 ... Door 15 ... Shield 16 ... Support shaft 20 ... Painted product

Claims (1)

[Scope of utility model registration request] 1. A drying furnace equipped with a carry-in / carry-out device for carrying a coated article while suspending it from a moving roller, wherein a through-hole recess for communicating the inside and outside of the furnace is formed on the upper side wall of the carry-in / out port opened and closed by a door. And a guide frame on which the moving roller travels is inserted into the through recess, and a shield plate is vertically installed in the through recess so as to be swingable and substantially shield the recess. A coated product drying oven characterized by: