JPS5810258Y2 - Toriyou Yakitsukero - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paint baking furnace for baking a paint such as enamel that is resistant to adhesion to a base material such as a wire rod.

In conventional baking of this kind, the furnace has a running path c, 4'f total 4'f exhaust path d, in which the base material rises, in the furnace body a, as shown in Fig. A heater e to heat the inside of the furnace body a, a catalyst f to purify the gas in the furnace body a, and a blower.
g, etc., or, as shown in FIG. 2, only a heater e is installed inside the running path C of the furnace body a.

Therefore, in all of these cases, a large amount of air is sucked in from the base material inlet opened at the bottom of the furnace body a due to the chimney effect of the running path C, and therefore the temperature inside the furnace body a becomes as shown in Figure 3. There is a problem that the temperature on the side facing the substrate inlet is extremely lower than that on the opposite side of the outlet h', resulting in non-uniform temperature inside the furnace body a.

Therefore, in order to solve this problem, the heater e has a large capacity so that the temperature on the substrate inlet side, which is the lowest temperature, is maintained at a predetermined furnace temperature. By arranging a damper i, the amount of air taken in can be restricted, or in the case of a hot-blast stove that circulates hot air within the furnace body a, the internal pressure of the furnace body a can be made higher than the outside pressure. to prevent air from being inhaled,
In the first case, the equipment will be seriously damaged and a large amount of equipment costs and expenses will be incurred.In the second case, the moving base material will vibrate, so the slit j of the damper i should be made larger accordingly. In the end, the last method has the disadvantage that the hot air inside the furnace is sucked out from the base material inlet, contaminating the air in the workplace.

This invention aims to solve these difficulties,
Describing this in detail based on the drawings shown in FIG.
An elongated casing 3 is provided to protrude downwardly so that its running path 4 communicates with the empty space 5 of the printing section 1' via the communication port γ', and the casing 3 is directed toward the front surface of the casing 3. The front cover 6 is attached with a screw 7 so that it can be opened and closed in the direction of the arrow, and a vertically elongated hole 9 is provided on the outside of the intake window 8 formed in the front cover 6. The screw punches 11 and 11' that protrude forward from the front lid 6 are pushed out from the vertical holes 9 and 9' by pressing the lid plate 10 with the opening γ, and the screw punches i i , i i
A nut (not shown) is screwed into ', and by tightening and loosening the nut, the cover plate 10 can be adjusted up and down, thereby adjusting the degree of the opening 8' of the suction window 8 to adjust the amount of air taken in,
This is so that the gas within the furnace body 1 is diluted to a predetermined concentration.

Next, a die support 12 having a U-shaped side surface is attached to the bottom opening 3' of the housing part 3, and the upper plate 12' is used as the bottom surface 13 of the furnace body 1. 12", circular through holes 14, 14' are formed in a horizontal row so as to face each other, and a guide groove 1 communicates with the through holes 14, 14'.
5, 15' are the front edges 16, 1 of the drawing boards 12', 12'.
A die 19 is provided coaxially with the through hole 14 and penetrates in the axial direction through a paint aperture hole 18 which is provided adjacent to the through hole 14 and through which a base material 17 such as a wire to which paint is resistant passes. A storage body 20 in which paint such as enamel is stored is arranged below the lower plate 12'' so that its paint supply groove 20' corresponds to the through holes 14 and 14'. It is.

As described above, in the present invention, the base material 17 to which the paint is attached is introduced into the furnace body 1, and the paint baking process in which the paint is baked onto the base material 17 is carried out in the furnace. `` is bored, and one end of a housing part 3 having a running path 4 for running the base material inside is attached to the outside of the communication hole 1''.
An upper plate 12' of the die support 13 is attached to the other end, and the upper plate 12' is provided with the running path 4 and the communication hole 1.
A through hole 14 communicating with the base material 1 on the same axis as the base material 1 is bored.
A die 19 having a paint aperture hole 18 for squeezing the paint of No. 7.
so that it can freely come into contact with the upper plate 12' of the die support 13,
Further, the through hole 14 is installed inside the die support 13 so as to be freely closable, and in the relative relationship between the through hole 14 and the communicating hole 1'', the communicating hole 1'' is formed larger than the through hole 14. It is characterized by being

Therefore, in the present invention, since the diameter of the communicating hole 1'' is large, even if the base material 17 oscillates laterally, the base material 17, including the inner circumference of the communicating hole 1'', will not come into contact with the furnace body 1. ,
This prevents the paint from peeling off, and on the other hand, even if the communicating hole 1'' is enlarged as described above, the communicating hole 1'' is
Since the die support 13 is covered by the upper plate 12', the die 19, etc., external air will not flow into the furnace body 1 more than necessary, and as a result, the pressure inside the furnace body 1 will be reduced. There is no need to raise the pressure higher than the atmospheric pressure, and therefore, the gas in the furnace containing solvent vapor is not discharged into the workplace, so there is no problem in the working environment or hygiene.

Furthermore, as shown in FIG. 3, the difference in temperature within the furnace body 1 is smaller than in the conventional furnace, so there is no need to use a large-capacity heater, resulting in power savings.

[Brief explanation of drawings]

Figures 1 and 2 are longitudinal side views showing different types of conventional paint baking furnaces, Figure 3 is a graph showing the temperature distribution of the furnace, and Figure 4 is an example of a damper used in the furnace. FIG. 5 is a longitudinal sectional side view of essential parts showing an embodiment of the furnace according to the present invention, and FIG. 6 is a perspective view of the furnace. 1...Furnace body, 1"...Communication hole, 3.
...Housing part, 4...Running path, 12'...
...Top plate, 13...Die support, 14...
...Through hole, 17... Board, 18...
・Paint aperture hole, 19...Die.

Claims (1)

[Scope of utility model registration request] A base material to which paint is attached is introduced into the furnace body, and the paint is baked onto the base material in the furnace. A communication hole is bored in the furnace body, and a communication hole is formed on the outside of the communication hole. is attached to one end of a casing having a running path for running the base material therein, and an upper plate of a die support is attached to the other end of the casing, and the upper plate includes: The die, which has a through hole that communicates with the traveling path and the communication hole on the same axis and has a paint aperture hole for squeezing the paint on the base material, is designed so that it can freely come into contact with the upper plate of the die support. , the through hole is installed in the die support so that it can be freely closed, and the relative relationship between the through hole and the communicating hole is such that the communicating hole is larger than the communicating hole.