JPH07106450B2 - Unnecessary brazing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unnecessary brazing apparatus used for manufacturing a cylindrical honeycomb structure such as a carrier for an exhaust gas catalytic converter of an automobile or the like.

[0002]

2. Description of the Related Art Such a honeycomb structure is obtained by stacking a steel flat plate and a corrugated plate with an adhesive and winding them into a coil to obtain a cylindrical honeycomb body. After adding the wax-like agent, the unnecessary wax is manually removed by using compressed air.

In this process, when the amount of the brazing agent adhered is insufficient, the strength of the honeycomb structure itself is lowered, and when it is present in excess, the honeycomb partly deteriorates to reduce its function. Therefore, it is necessary to apply an appropriate amount of wax.

Conventionally, as a method of setting a brazing agent on a work such as a fuel tank assembly or a cam shaft, for example, Japanese Patent Publication No.
Japanese Patent Publication No. 14267 discloses a device for spraying a brazing agent with a spraying nozzle and applying an appropriate vibration to remove the brazing agent to set an appropriate amount of the brazing agent.

FIG. 6 is a diagram showing a partial cross-section of the structure of the honeycomb body targeted by the present invention, and FIG. 7 is a diagram showing a portion to which a brazing agent is applied.

With reference to these figures, in the brazing agent applied to the joint portion X between the flat plate B and the corrugated plate C forming the honeycomb body A, the above-mentioned nozzle is used for removing the excessive brazing agent Y. Even if you try to apply a device that also uses vibration,
Since the locations where the brazing agent is applied are extremely partial and innumerable dispersed locations in the honeycomb structure member, it is extremely difficult to realize it.

[0007]

The problem to be solved by the present invention is to eliminate the attachment of an excessive brazing agent when brazing a honeycomb structure, and to set an appropriate amount of the brazing agent, and moreover, on the conveyor. The objective is to complete an apparatus that enables continuous processing of honeycomb structures that are continuously conveyed.

[0008]

The present invention relates to a device for removing unnecessary wax by blowing compressed air into a honeycomb structure formed by winding a flat plate and a corrugated plate in the axial direction to remove unnecessary wax. Incorporating the nozzle, which is formed so that the spraying direction is movable, into the honeycomb structure.
Provided on both sides in the axial direction, and alternately compressed air
It is characterized by having a mechanism for spraying .

[0009]

[Action] blown honeycomb compressed air ejected from the nozzle
No need for the entire honeycomb structure by spraying alternately from both sides in the winding axis direction of the honeycomb structure
Wax can be removed uniformly .

Furthermore, it is possible to ensure the setting of the brazing agent, optionally by combining it with a vibration device.

[0011]

EXAMPLE An example in which the apparatus of the present invention is applied to the treatment of a honeycomb structure continuously conveyed on a belt conveyor will be shown.

FIG. 1 shows a removal device 10 according to the present invention.

In the figure, 1 is a pipe for sending compressed air, 2 is a nozzle device, and 3 is a cylinder which is a movable mechanism for rotating the nozzle device 2 in the vertical direction. The nozzle device 2 is composed of a base body 4 containing a pipe for carrying compressed air and a spraying part 5 attached to the tip thereof, and as shown in FIG. 2 taken along the line D-D in FIG. Since the groove-shaped slits in the vertical direction blow the entire surface of the honeycomb structure A, the honeycomb structure A
Is formed longer than the height of. The air ejected from the slit-shaped blowing port 6 has a high pressure distribution in the central portion as shown by the pressure distribution 7 of the air ejected from the blowing port 6, and by the reciprocating movement in the arrow direction due to the operation of the cylinder 3, The inner honeycomb portion of the honeycomb structure A has a structure in which a portion having the highest air pressure passes evenly.

The blowing nozzle is not the slit type nozzle shown in FIG. 2, but a commercially available air nozzle 1 as shown in FIG.
The same effect can be obtained with a spray nozzle of the type in which several 2 are installed in the spray section 5.

FIG. 4 is a plan view showing a state in which the removing device 10 shown in FIGS. 1 and 2 is installed on the conveyor 8.
FIG. 5 is a side view of the device shown in FIG. 4.

As shown, the removal devices 10a and 10b
Is a honeycomb structure A to be processed on both sides of the conveyor 8.
Are arranged in accordance with the feeding pitch P of the above, and both removing devices can completely remove the excess brazing agent by sequentially blowing compressed air from both sides of the honeycomb structure A being conveyed.

Immediately before the removing devices 10a and 10b, detectors 9a and 9b for detecting the passage of the honeycomb structure A and issuing an instruction to start and end the air blowing are arranged.

In such an apparatus, when the honeycomb structure A conveyed on the conveyor 8 passes through the first detector 9a, the opening / closing valve 11 of the first removing device 10a.
When a is opened and compressed air is blown to start unnecessary brazing, and when the first detector 9a detects that there is no material, the open / close valve 11a is closed and the unnecessary brazing from one end is completed. . Further, when the honeycomb structure A passes through the second detector 9b, the opening / closing valve 11b of the second removing device 10b is opened, the compressed air is blown from the other end side to remove unnecessary wax, and after a predetermined time. When the detector 9b detects that there is no material, the open / close valve 11b is closed and the unnecessary wax removal is completed.

By such a series of operations, unnecessary brazing can be continuously performed by effective compressed air blowing, and manufacturing with high productivity becomes possible.

[0020]

According to the present invention, the following effects can be obtained.

(1) It has become possible to perform a continuous brazing agent removal operation and a uniform treatment, which have conventionally been low in productivity.

(2) Unnecessary brazing operation can be performed automatically and continuously, and labor saving and productivity improvement can be achieved.

(3) Since all the honeycomb structures to be processed are processed under the same conditions, the quality is improved and the quality is stabilized.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a structure of an unnecessary wax removing apparatus according to an embodiment of the present invention.

FIG. 2 is a view as seen from the line D-D in FIG. 1, showing the shape of the slit of the gas outlet.

FIG. 3 shows a spray nozzle of the type in which several commercially available air nozzles are installed in the spray section.

FIG. 4 is a plan view showing a state in which the unnecessary wax removing device of FIG. 1 is arranged on a conveyor line.

5 is a side view of the device of FIG.

[Fig. 6] Fig. 6 is a diagram showing an appearance of a honeycomb structure to be processed by the apparatus of the present invention.

FIG. 7 is a view showing the structure of a honeycomb structure by its cross section.

[Explanation of symbols]

 1 Pipe for compressed air 2 Nozzle device 3 Cylinder 4 Substrate 5 Spraying part 6 Spraying port 7 Pressure distribution 8 Conveyor 9a, 9b Detector 10, 10a, 10b Removal device 11a, 11b Opening valve A Honeycomb structure B Flat plate C Corrugated plate P Honeycomb structure feed pitch

Continuation of front page (56) Reference JP-A-57-91874 (JP, A) JP-A-3-77777 (JP, A) JP-B 57-14267 (JP, B2)

Claims (1)

[Claims] 1. A device for removing unnecessary brazing by blowing compressed air from the winding axis direction in the honeycomb structure formed winding the flat plate and the corrugated plate, the spraying nozzle, before
Provided on both sides in the winding axis direction of the honeycomb structure
And an unnecessary brazing device provided with a mechanism for alternately blowing compressed air .